To find the asteroid's mass, we can use the formula F = ma (force equals mass times acceleration).
Rearranging the formula to solve for mass, we get m = F/a. Plugging in the given values, we get m = 450 N / 7.0 m/s^2.
Simplifying this expression gives us m = 64 kg, which is option A. Therefore, the correct answer is A.
To determine the asteroid's mass when an astronaut applies a force of 450 N and the asteroid accelerates at 7.0 m/s², we can use Newton's second law of motion, which states that force (F) equals mass (m) times acceleration (a), or F = m*a.
1. Identify the given values: F = 450 N and a = 7.0 m/s².
2. Rearrange the formula to find the mass: m = F/a.
3. Plug in the given values: m = 450 N / 7.0 m/s².
4. Calculate the mass: m = 64.29 kg (rounded to 2 decimal places).
The asteroid's mass is approximately 64 kg (option A).
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Which statement about a turtle's energy source is true?
Responses
A. A turtle performs photosynthesis to gain its energy.
B. Nutrients in the water are the ultimate source of energy for a turtle
C. A turtle relies indirectly on the sun as an energy source.
Answer:
C. A turtle relies indirectly on the Sun as an energy source.
Explanation:
Turtles are animals, meaning they are unable to perform photosynthesis, thus option A is inapplicable. Turtles consume food such as algae and seagrass. These aquatic plants gain their energy directly from the Sun through photosynthesis, and as a result when the turtle consumes these plants, that energy from the Sun is indirectly feeding the turtle.
what is the potential difference across the plates of the capacitor after the slab has been inserted?
Answer:
4/3 times its original value
Explanation:
hope this helped
A moving police car plays a sound with constant frequency fo. The police
car moves from the stationary observer on the left, L, towards the
stationary observer on the right, R.
How does the frequency, fL, observed by the observer on the left
compare to the frequency, fR, observed on the right?
Choose 1 answer:
A. fL > fR
B. fL < fR
C. fL = fR
The frequency observed by the observer on the left (fL) is higher than the frequency observed by the observer on the right (fR). Here option A is the correct answer.
The observed frequency, fL, of the sound heard by the observer on the left is higher than the observed frequency, fR, heard by the observer on the right. This phenomenon is known as the Doppler effect.
When a source of sound is moving towards an observer, the sound waves are compressed, resulting in a higher frequency. Conversely, when the source of sound is moving away from an observer, the sound waves are stretched, leading to a lower frequency.
In this case, as the police car is moving towards the observer on the left, the sound waves are compressed, causing an increase in frequency. Therefore, the observer on the left hears a higher frequency, fL. On the other hand, the observer on the right experiences the sound waves stretching due to the car moving away, resulting in a lower frequency, fR. Thus, the correct answer is A. fL > fR.
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PLEASE HELP ME ILL MARK BRAINIEST IF YOU DO THIS RIGHT!!!
Answer:
distance divided by time is the speed. Your welcome
a girl weighing 200 newtons hangs from three pulley systems. (2 points) the blank for which pulley system would read 200 newtons? pulley a pulley b pulley c all three pulley systems
The correct answer is "Pulley C." In a system of three pulleys, where the girl is hanging from one end and the other end is fixed, the tension in the rope is equal throughout the system.
If a girl weighing 200 newtons hangs from three pulley systems, the reading on all three pulley systems would be 200 newtons. In an ideal pulley system, the tension in the rope is the same throughout, so the force applied to each pulley would be equal to the weight of the girl, which is 200 newtons in this case. The correct answer is "Pulley C." In a system of three pulleys, where the girl is hanging from one end and the other end is fixed, the tension in the rope is equal throughout the system.
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Which of the following is a pure
substance?
A. Heterogenous mixture
B. Homogenous mixture
C. Solution
D. Element
Answer:
B. Homogenous mixture
Explanation:
........
Detonation of a fusion type hydrogen bomb is started by____ A) splitting a small piece of uranium. B) pressing together several small pieces of uranium. C) igniting a small fission bomb. D) turning on a laser cross fire. E) none of these
Detonation of a fusion type hydrogen bomb is started by igniting a small fission bomb.
This creates a high temperature and pressure environment that triggers the fusion reaction of hydrogen isotopes.
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A student has chosen to study a swinging pendulum . The pendulum would bea. a system b. the surroundings c. a universe d. a force
To find:
What a pendulum is?
Explanation:
A system is a matter defined by the walls of space.
A surrounding is an environment around the system in observation.
A pendulum is a system containing the bob of the pendulum and the string to which the bob is attached.
The rest of the environment around the pendulum is considered as the surrounding.
Final answer:
The pendulum the student has chosen to study is a system.
Thus the correct answer is option a.
A man carries a load of mass 2.6kg from one end of a uniform pole 100cm long which has a mass 0.4kg. The pole rest on his shoulder at a point 60.0cm from the load and he holds it by the other end. What vertical force must be applied by his hand and what is the force on his shoulder?
Answer:
F = 39.2 N (hand force) and N = 68.6 N (shoulder force)
Explanation:
In this exercise we must use the rotational and translational equilibrium conditions, we have several forces: the weight (W) of the pole applied at its geometric center, the load (w1) at one end, the shoulder support (N) 60 cm from the load and hand force (F) at the other end of the pole
Let's set the reference system at the fit point of the shoulder
∑ τ = 0
We will assume that the counterclockwise turns are positive
w₁ 0.60 + W 0.1 + F₁ 0 - F 0.4 = 0
all distances are measured from the support of the man (x₀ = 0.60 m)
F = (w₁ 0.60 + W 0.1) / 0.4
F = (m₁ 0.6 + m 0.1) g / 0.4
let's calculate
F = (2.6 0.6 + 0.4 0.1) 9.8 / 0.4
F = 39.2 N
this is the force that the hand must exert to keep the system in balance
We apply the translational equilibrium condition
-w₁ -W + N - F = 0
N = w₁ + W + F
N = (m₁ + m) g + F
let's calculate
N = (2.6 + 0.4) 9.8 + 39.2
N = 68.6 N
Two vectors have magnitudes of 9.6 and 32. The angle between them when they are drawn with their tails at the same point is 61.7°. The component of the longer vector along the line of the shorter is: a. 32.0 b. 15.2 c. 4.6 d. 28.2 e. 8.5
The component of the longer vector along the line of the shorter vector is approximately 15.2 (option b). We can use the concept of vector projection.
To find the component of the longer vector along the line of the shorter vector, we can use the concept of vector projection.
Let's denote the longer vector as A (magnitude of 32) and the shorter vector as B (magnitude of 9.6). The angle between them is given as 61.7°.
The component of vector A along the line of vector B can be found using the formula:
Component of A along B = |A| * cos(theta)
where theta is the angle between vectors A and B.
Substituting the given values, we have:
Component of A along B = 32 * cos(61.7°)
Using a calculator, we can evaluate this expression:
Component of A along B ≈ 15.2
Therefore, the component of the longer vector along the line of the shorter vector is approximately 15.2 (option b).
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Prelab exercise 1. Why is it important for your measurements that the track is level?
It is very important for your measurements that the track is level because unlevel track change the acceleration of an object.
Why track's level is important?A non-level track leads to bring change in the acceleration of an object which leads to different value of experiment.
So we can conclude that it is important for your measurements that the track is level because unlevel track change the acceleration of an object.
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The track must be level for your measurements because an unlevel track changes the acceleration of an object.
What is measurement?It is defined as the numerical quantity that gives an idea about object length, width, and many more. It can be used to compare two objects.
The non-level track causes changes in an object's acceleration, resulting in various experiment values.
As a result, we can deduce that now the levelness of the track is critical for your measurements, as an uneven track changes an entity's acceleration.
Thus, the track must be level for your measurements because an unlevel track changes the acceleration of an object.
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a lambda expression is a shortcut technique for writing an
A lambda expression is a shortcut technique for writing an anonymous function in programming. It allows developers to write short, concise functions without having to define them explicitly. Lambda expressions are commonly used in functional programming languages to create functions on the fly, as they can be passed around as arguments to other functions or assigned to variables.
They are particularly useful when dealing with collections of data, where the functions can be applied to each element of the collection in a concise and efficient manner. In summary, a lambda expression is a powerful tool for simplifying code and improving readability, making it an essential skill for any programmer to master.
It seems like you're asking about lambda expressions and would like an explanation that includes the phrase "a lambda expression is a shortcut technique for writing an." Here's my answer:
A lambda expression is a shortcut technique for writing an anonymous function, which is a function without a name. This allows you to create small, single-use functions for specific tasks without the need for a full function definition. Here's a step-by-step explanation of how lambda expressions work:
1. Identify the task that requires a small, single-use function.
2. Instead of defining a complete function using the "def" keyword, use the "lambda" keyword followed by the function's input parameters and a colon.
3. After the colon, write the function's single expression that will be returned as the output.
4. Assign the lambda expression to a variable, if needed, or use it directly as an argument for another function.
For example, suppose you need to create a function that squares a number. Using a lambda expression, you can write this function in just one line:
square = lambda x: x ** 2
Now you can call the "square" function with an input value like this:
result = square(5)
The variable "result" will store the value 25, which is the square of 5. Lambda expressions are useful when you need a concise way to write simple functions in your code.
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Which statement best expresses Newton's second law of motion?
A: The acceleration of an object depends on the balance between the net applied forces.
B: The acceleration of an object depends on the balance between friction and gravity.
C: The acceleration of an object depends on the object's mass and the net applied force.
D: The acceleration of an object depends on the object's mass and its velocity.
Answer:
option C
since F=ma
the acceleration of an object depends on the object's mass and the net applied force
10N and 20N are acting ona body of mass 2kg the minimum acceleration will be
5m/s² is the minimum acceleration of the body.
To determine the minimum acceleration of the body, we can use Newton's second law, which states that the force acting on a body is equal to its mass multiplied by its acceleration.
Given that two forces of 10N and 20N are acting on a body of mass 2kg, we can calculate the net force acting on the body as follows:
Net force = 20N - 10N = 10N
Now, we can use Newton's second law to calculate the minimum acceleration of the body:
Net force = mass x acceleration
10N = 2kg x acceleration
Rearranging the equation, we get:
Acceleration = 10N / 2kg
Acceleration = 5m/s²
Therefore, the minimum acceleration of the body is 5m/s².
It is important to note that this is the minimum acceleration because it assumes that the forces are acting in the same direction. If the forces were acting in opposite directions, the net force would be smaller and the acceleration would be less than 5m/s².
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Distance v. Time
What is the velocity at 1 meters?
4.5
4
3.5
3
2.5
Distance (m)
2.
1.5
1
0.5
0
0
2
6
8
10
Time (s)
Answer:
4
(m)
2 ( s )
Explanation:
ok...........
What is the best description of sound waves?
A. A source vibrates up and down, causing air molecules to move up and down perpendicular to the direction the wave is transmitted.
B. A source vibrates back and forth, causing air molecules to move back and forth in the same direction that the wave is transmitted.
C. A source vibrates up and down and back and forth, causing air molecules to move in a circular motion as the wave is transmitted.
D. A source ejects a ring of high-velocity air molecules that travel from the source to a listener.
Answer:
If im right the answer should be D
a large centrifuge, like the one shown in figure below, is used to expose aspiring astronauts to accelerations similar to those experienced in rocket launches and atmospheric reentries. at what angular velocity is the centripetal acceleration 8.9 g if the rider is 14.9 m from the center of rotation?
The angular velocity required for a centripetal acceleration of 8.9 g at a distance of 14.9 m from the center of rotation is approximately 67.7 radians per second.
Find the angular velocity is the centripetal acceleration?The centripetal acceleration is given by the formula ac = ω^2r, where ω is the angular velocity and r is the radius. We can rearrange this equation to solve for ω: ω = √(ac/r).
Given that the centripetal acceleration is 8.9 g, we can convert it to meters per second squared (m/s²) by multiplying it by the acceleration due to gravity (9.8 m/s²): ac = 8.9 * 9.8 = 87.22 m/s².
Substituting the values into the equation, we have ω = √(87.22/14.9) ≈ 67.7 rad/s.
Therefore, the angular velocity required for the centripetal acceleration of 8.9 g at a distance of 14.9 m from the center of rotation is approximately 67.7 radians per second.
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A block of metal weighs 60 newtons on the earth. You take it to the moon and find it weighs 10 newtons. With what acceleration will it
fall on the moon?
O
m
• 6.0 m/s2
9.8 m/s2
o
1.6 m/s
1.0 m/s?
2
Answer:
1.6 m/s
Explanation:
Two large rectangular aluminum plates of area 180 cm2 face each other with a separation of 3 mm between them. The plates are charged with equal amount of opposite charges, ±17 µC. The charges on the plates face each other. Find the flux (in N · m2/C) through a circle of radius 3.5 cm between the plates when the normal to the circle makes an angle of 4° with a line perpendicular to the plates. Note that this angle can also be given as 180° + 4°.
Answer:
Electric flux;
Φ = 30.095 × 10⁴ N.m²/C
Explanation:
We are given;
Charge on plate; q = 17 µC = 17 × 10^(-6) C
Area of the plates; A_p = 180 cm² = 180 × 10^(-4) m²
Angle between the normal of the area and electric field; θ = 4°
Radius;r = 3 cm = 3 × 10^(-2) m = 0.03 m
Permittivity of free space;ε_o = 8.85 × 10^(-12) C²/N.m²
The charge density on the plate is given by the formula;
σ = q/A_p
Thus;
σ = (17 × 10^(-6))/(180 × 10^(-4))
σ = 0.944 × 10^(-3) C/m²
Also, the electric field is given by the formula;
E = σ/ε_o
E = (0.944 × 10^(-3))/(8.85 × 10^(-12))
E = 1.067 × 10^(8) N/C
Now, the formula for electric flux for uniform electric field is given as;
Φ = EAcos θ
Where A = πr² = π × 0.03² = 9π × 10^(-4) m²
Thus;
Φ = 1.067 × 10^(8) × 9π × 10^(-4) × cos 4
Φ = 30.095 × 10⁴ N.m²/C
if you are riding in a car that suddenly turns to the right, why do you tend to slide to the left side?
which of the following spectroscopy methods does not involve the interaction of organic molecules with electromagnetic radiation?
The following spectroscopy method does not involve the interaction of organic molecules with electromagnetic radiation:
Mass Spectrometry (MS): Mass spectrometry is a technique that analyzes the mass-to-charge ratio of ions. It does not directly involve the interaction of organic molecules with electromagnetic radiation. Instead, it involves the ionization of molecules and the measurement of their mass-to-charge ratios using magnetic and electric fields.
On the other hand, the following spectroscopy methods do involve the interaction of organic molecules with electromagnetic radiation: Ultraviolet-Visible Spectroscopy (UV-Vis): UV-Vis spectroscopy measures the absorption or transmission of ultraviolet and visible light by organic molecules.
Infrared Spectroscopy (IR): IR spectroscopy measures the absorption or emission of infrared light by organic molecules. It provides information about the molecular vibrations and functional groups present in the molecules.
Nuclear Magnetic Resonance Spectroscopy (NMR): NMR spectroscopy measures the absorption of radiofrequency radiation by atomic nuclei in organic molecules. It provides information about the molecular structure, connectivity, and environment of the nuclei.
It's important to note that different spectroscopy methods have their own applications and provide complementary information about organic molecules.
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What distance will the walker travel if he walks at 3.0 miles per hour for 1 hour and 20 minutes?
Answer:
The walker travelled 3.6 miles.
Explanation:
d = vt
(v is velocity or speed and t is time, and d is distance.)
d=(3.0 mph)(1.2)
Leave the time in hours, since the unit for the speed is miles per hour.
d=3.6 miles
The distance will the walker travel if he walks at 3.0 miles per hour for 1 hour and 20 minutes is 3.6 km.
What is distance?Distance is defined as the entire path traveled by an object in motion, regardless of path direction. The distance is symmetric, which means that for any two points P1 and P2, the distance between them is equal to the distance between them, or d(P1, P2) = d(P2, P1). 3. The triangle inequality is a less visible feature of the distance function. P1 for any point. The quantity of meters in a vector unit is the distance factor.
Distance = velocity x time
Given velocity = 3.0 miles per hour
Time = 1.2 hour
Distance = 3.0 x 1.2
Distance = 3.6 km/hour.
Thus, the distance will the walker travel if he walks at 3.0 miles per hour for 1 hour and 20 minutes is 3.6 km.
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If the speed of light in some unknown material is 2. 00 × 108 m/s, what is the index of refraction of the medium?
The index of refraction of the unknown material is 1.5.
The index of refraction (n) of a medium is defined as the ratio of the speed of light in a vacuum (c) to the speed of light in the medium (v):
n = c / v
In this case, the speed of light in the unknown material is given as 2.00 × \(10^8\) m/s. The speed of light in a vacuum is approximately 3.00 × \(10^8\) m/s. Substituting these values into the formula:
n = (3.00 × \(10^8\) m/s) / (2.00 × \(10^8\) m/s)
Simplifying the expression:
n = 1.5
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Explain the operation of a simple circuit made of logic gates
and design the following combinational circuit.
Answer:
A combinational logic circuit is a circuit whose outputs only depend on the current state of its inputs. In mathematical terms, the each output is a function of the inputs. These functions can be described using logic expressions, but is most often (at least initially) using truth tables.
Tarzan swings back and forth on a
vine with a period of 7.27 s. How
long is the vine?
(Unit = m)
Answer:
Considering Tarzan as a point mass at point L and using the equation for a simple pendulum:
P = 2 pi (L / g)1/2
P^2 = 4 pi^2 L / g
L = g P^2 / (4 pi^2) = 9.8 m/s^2 * 7.27^2 s^2 / (4 pi^2) = 13.1 m
Answer: 13.1
Explanation:
in a certain region of space the electric potential increases uniformly from east to west and does not vary in any other direction. the electric field:
In this case, the electric field in that area will cause a charged particle to experience a force in the direction of the increasing electric potential if it is discharged at a position with a lower electric potential.
When the electric potential is known to stay constant in a particular area of space, what is the electric field in that area?Zero There is no direction of greatest increase if the electric potential is constant. Therefore, anywhere inside the region of continuous electric field, the electric field is zero and the gradient of the electric potential is also zero.
What factors determine the electric field potential in a particular area of space?Only the x coordinate, where a and b are constants, determines the field potential in a specific area of space. Discover the space charge's Q(x) distribution. As V=ax3+b, the electric field potential at a given location in space only depends on the x coordinates.
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How are gravity and air resistance alike? How are they different?
Answer:
kid
Explanation:
Given small samples of three liquids, you are asked to determine their refractive indexes. However, you do not have enough of each liquid to measure the angle of refraction for light refracting from air into the liquid. Instead, for each liquid, you take a rectangular block of glass (n= 1.52) and place a drop of the liquid on the top surface of the block. You shine a laser beam with wavelength 638 nm in vacuum at one side of the block and measure the largest angle of incidence for which there is total internal reflection at the interface between the glass and the liquid (Figure 1). Your results are given in the table (Figure 2). What is the refractive index of liquid A at this wavelength? What is the refractive index of liquid B at this wavelength? What is the refractive index of liquid C at this wavelength?
At this wavelength, liquid A has a refractive index of 1.4 for liquid A, liquid C has a refractive index of 1.4, and liquid B has a refractive index of 1.35 for liquid A.
In optics, an optical medium's refractive index, also known as refraction index, is a dimensionless number that indicates how well the medium bends light. How much light is bent or refracted when it enters a material depends on the material's refractive index.
In physics, the wavelength is the length over which a periodic wave repeats, or its spatial period. It is the separation between adjacent spots on a wave that correspond to the same phase. Is called wavelength.
TETHTA = 36.3
366.3 = SIN^-1(1.52^2 - Nc^2)
36.3 = sin^-1(1.52^2 - Nc^2)
Nc = (1.52^2 - (sin36.3^2) = 1.399 = 1.4
Nc = 1.4
similarly, for A and B the refractive index of liquid.
Nb = 1.35, Na = 1.4
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Why do the positive charges in the sugar grain not move?
1. Because protons are "stuck" in the nucleus, so they don't move between atoms in a material
2.
Because they are attracted by the negative tupperware
3. Because they are repelled by the negative tupperware
4.
Because the positive charges feel no attractive force from the tupperware
2. As water passes through the rock layers of the earth it is cleaned by...
1.Sedimentation
2.Flocculation
3.Filtration
4.Aeration
5.Disinfection
Answer:
Filtration
Explanation:
is a process by which impurities or particles are removed from a fluid, either a liquid or a gas. The liquid, or feed, is poured over a filter, which catches particles and allows filtered liquid, or filtrate, to move through it.
I'm in middle school, and I answered an basic question for you. Come on man, all you have to do is look up the definition.