A 52 kg person is running 2.5 m/s. What is their momentum?

The possible valid accesses for an array a and vector v, each with 10 elements is given below:Array: a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9]Vector: v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7], v[8], v[9]

The term array is used to define a set of similar data types that are stored in contiguous memory blocks. The index of an array starts at 0, which means the first element of the array is stored at index 0. In the case of arrays, the elements must be of the same data type.The term vector is defined as a dynamic array, which means that the size of the vector can be changed during runtime. Vectors are defined in the same way as arrays, except that they have a dynamic size limit and can be easily resized.

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Explanation:

Watts are defined as 1 Watt = 1 Joule per second (1W = 1 J/s)

which means that 1 kW = 1000 J/s. A Watt is the amount of energy (in Joules) that an electrical device (such as a light) is burning per second that it's running.

Answer: 96

Explanation:

When a ball is kicked, it start to feel the force of gravity acting as soon as the ball leaves the ground. At the moment the ball leaves the ground, it becomes subject to the gravitational force.

The force of gravity acts on an object continuously, regardless of its motion or position. When a ball is kicked and leaves the ground, it immediately starts to feel the force of gravity acting on it. This is because gravity is a fundamental force that attracts objects with mass towards each other.

At the moment the ball leaves the ground, it becomes subject to the gravitational force. This force causes the ball to be accelerated downward throughout its trajectory. The ball's motion is a result of the combination of the initial kick and the influence of gravity.

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The phase angle between the source voltage and current at the cutoff frequency depends on the specific circuit or system being considered.

In general, at the cutoff frequency of a filter or a resonant circuit, the phase angle between the source voltage and current can vary depending on the type of circuit and its components.

For example, in a simple RC (resistor-capacitor) circuit, the phase angle at the cutoff frequency is typically -45 degrees or \(-\frac{\pi}{4}\) radians, indicating that the current lags behind the voltage. In an RL (resistor-inductor) circuit, the phase angle can be +45 degrees or \(+\frac{\pi}{4}\)  radians, indicating that the current leads the voltage.

It's important to note that the phase angle at the cutoff frequency can be different for different circuit configurations and frequency response characteristics. Therefore, without specific information about the circuit or system in question, it is not possible to determine the exact phase angle at the cutoff frequency.

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(a) a strip welded together from brass on one side and steel on the other Stripe made of two metals.

(b) It flexes.

(c) These metals expand in different ways.

A bimetallic strip is made up of two distinct metals that have been welded together. Different metals expand at various rates when heated. It bends as a result of heat expansion. Thermal expansion refers to the tendency of matter to alter form, area, and volume in reaction to temperature changes.

Because the water vapor flowing out of the nozzle has expanded and cooled, he may hold his palm a few inches above the nozzle.

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The speed of the 2.86 g marble after the collision is 1.05 m/s.

We can use the conservation of momentum to solve this problem:

Before the collision:

m1 = 6.63 g = 0.00663 kg (mass of the first marble)

v1 = 1.41 m/s (velocity of the first marble)

m2 = 2.86 g = 0.00286 kg (mass of the second marble)

v2 = 0 m/s (initial velocity of the second marble)

After the collision:

v1' = 0.86 m/s (final velocity of the first marble)

v2' = ? (final velocity of the second marble)

Using conservation of momentum:

\(m1v1 + m2v2 = m1v1' + m2v2'\)

Substituting the known values:

\(0.00663 kg * 1.41 m/s + 0.00286 kg * 0 m/s = 0.00663 kg * 0.86 m/s + 0.00286 kg * v2'\)

Solving for v2':

\(v2' = (0.00663 kg * 1.41 m/s - 0.00663 kg * 0.86 m/s) / 0.00286 kgv2' = 1.05 m/s\)

Therefore, the speed of the 2.86 g marble after the collision is 1.05 m/s.

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When the ball on the left is pulled to the side and released, it will swing back and hit the ball on the right. Upon impact, the momentum of the left ball will be transferred to the right ball, causing the right ball to start swinging to the right while the left ball will come to a stop.

Therefore, the correct answer is: "The ball on the right will swing to the right." Option C

In physics, momentum is a property of moving objects that is determined by both their mass and velocity. It is defined as the product of an object's mass and velocity, and it is a vector quantity, which means it has both magnitude and direction.

Mathematically, momentum (p) is expressed as:

p = m * v

where m is the mass of the object and v is its velocity.

Momentum is conserved in a closed system, meaning that the total momentum of the system remains constant unless an external force acts on it. This is known as the law of conservation of momentum, which is a fundamental principle of physics. The law of conservation of momentum has many practical applications, from understanding the behavior of collisions in billiards or car accidents, to designing spacecraft trajectories, to studying the behavior of subatomic particles

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Answer:

the answer is C ----- it is the rate of change of velocity per unit time

Explanation:

acceleration

\( = \frac{velocity(v)}{time(t)} \)

The acceleration of the object is 0.926 m/s².

The electric force experienced by the object is the product of charge and electric field of the object and it is given as;

F = Eq

where;

F = 4900 x 8.5 x 10⁻⁹

F = 4.165 x 10⁻⁵ N

The acceleration of the object is determined by applying Newton's second law of motion as follows;

a = F/m

a = (4.165 x 10⁻⁵ N) / (4.5 x 10⁻⁵ kg)

a = 0.926 m/s²

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Answer: The Sun's energy is more concentrated on the equator than the poles. This is because the Sun's energy (in the form of warmth) is more direct at the equator, and less direct at the poles.

Explanation: You can see this with a flashlight. When you point the flashlight directly toward a tale, the light is very concentrated and right. However, when you point the flashlight toward the table at an angle, the light becomes more spread out and less concentrated.  This is why even though sometimes the North Poles and South Poles have 24 hours of sunlight, it never actually reaches a high temperature and instead, keeps it's cold temperature.

Answer:

43.58 m

Explanation:

If you travel 500 m on a straight road that slopes upward at a constant angle of 5 degrees

Using trigonometry ratio

Sin 5 = opposite/hypothenus

Where the hypothenus = 500m

Opposite = height h

Sin 5 = h/500

Cross multiply

500 × sin 5 = h

h = 500 × 0.08715

h = 43.58m

Therefore, the height above the starting point is equal to 43.58m

NEOs, or Near-Earth Objects, refer to asteroids and comets that have orbits that bring them close to Earth. These objects are of great interest to scientists and astronomers due to the potential threat they pose to our planet in the event of a collision. NEOs can be composed of rock, metal, ice, and dust, depending on whether they are asteroids or comets.

Asteroid 2004 FH, which passed within a tenth of the Earth-Moon distance in March 2004, was classified as a NEO. Its classification was based on the discovery that its period, or the time it takes to complete one orbit around the Sun, was about nine months. This close encounter with Earth and its relatively short period made it fall under the category of NEO.

NEOs are further classified into different groups based on their orbits. These classifications include Atens, Apollos, and Amors. Atens have orbits that primarily fall within the orbit of Earth, Apollos have orbits that cross Earth's orbit, and Amors have orbits that are mostly outside Earth's orbit but can still come close to our planet.

Studying NEOs is crucial for understanding the dynamics of our solar system and for developing strategies to mitigate potential asteroid impacts on Earth.

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Answer:

0.389 meters per second

Explanation:

1. Get your knowns

a. 40 meters per 120 seconds

b. 30 meters per 60 seconds

2. Add

Total distance = 40 meters + 30 meters = 70 meters

Total time = 120 seconds + 60 seconds = 180 seconds

3. Divide

Average velocity = 70 meters / 180 seconds

= 7 meters / 18 seconds

= 0.388... meters per second

The element of their chemical structure that differentiates one amino acid from another is the side chain, also known as the R-group.

the R-group is what makes each amino acid unique. The R-group can vary in size, shape, and chemical properties, which in turn determines the specific characteristics and functions of each amino acid.

The R-group can consist of different elements such as hydrogen, carbon, oxygen, nitrogen, and sulfur, as well as various functional groups. This variation in the R-group contributes to the diversity and complexity of proteins.

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Answer:

In physics, power is the amount of energy transferred or converted per unit time. In the ... Power (physics) ... Angular acceleration / displacement / frequency / velocity. show. Scientists ... Hence the formula is valid for any general situation. ... because they define the maximum performance of a device in terms of velocity ratios

Explanation:

The current through the 2Ω resistor is 9.5A

The terminal voltage is 10.8 V

a) The voltage V across 8 Ω resistor is V = I*R = 8*0.5 = 4V

the current through 16Ω resistor is then I = V/R = 4/16 = 0.25 A

the current through 20Ω resistor is then I = current through 8Ω resistor + current through 16Ω resistor = 0.75 A

voltage across 20Ω is V = I*R = 0.75*20 = 15 V

the source voltage is Vs = V8 + V20 = 4+15 = 19 V

therefore the current through 2Ω resistor is

I = V/R = 19/2 = 9.5 A

b) The terminal voltage is

Vterminal = VR = I*R = 0.450*24 = 10.8 V

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(a) Numerical value of the ratio 3GM/rc² at the surface of the sun is approximately 2.12 × 10⁻⁶; (b) Trajectory is a straight line; (c) Radius = r = 3GM = 3 × Gravitational Constant × Mass of Sun, that is  3.762 × 10²⁰ m³s⁻² kg.

(a) We need to find the numerical value of the ratio 3GM/rc² at the surface of the sun. Substitute the given values into the equation. The mass of the sun (M) is 2.0 × 10³⁰ kg. Radius (r) is 7 × 10⁵ km.

Convert the radius from kilometers to meters,

r = 7 × 10⁵ km = 7 × 10⁸⁸ m

Calculating the ratio.

Ratio = (3GM)/(rc²)

\(= \frac{3G(2(10^{30}))}{7(10^{8}3(10^{8}))} \\= \frac{(6.67(10^{-11}))3G(2(10^{30}))}{7(10^{8}3(10^{8}))} \\\\\)

= (13.34 × 10¹⁹)/(63 × 10²⁴)

≈ 2.12 × 10⁻⁶

Numerical value of the ratio 3GM/rc² at the surface of the sun is approximately 2.12 × 10⁻⁶.

(b) We neglect the right-hand side of the equation. That means the differential equation.

d'u = 0

Integrating both sides.

du = 0

Integrating again.

u = constant

This means that the trajectory is a straight line.

(c) We have to find the radius at which the trajectory of light forms a circular orbit around a black hole.

3GMu - u² = 0

3GMu = u²

Dividing both sides by u (assuming u ≠ 0).

3GM = u

Substituting u = 1/r.

3GM = 1/r

Rearranging the equation,

r = 3GM

3GM = 3 * (mass of the sun) * (gravitational constant)

Assuming the mass of the sun (M) is approximately 1.989 × 10³⁰ kg, we can compute,

3GM = 3 * (1.989 × 10³⁰ kg) * (6.67430 × 10⁻¹¹ m^3 kg⁻¹ s⁻²)

3GM ≈ 3.762 × 10²⁰ m³s⁻² kg

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The other end of the spring is secured to a wall. The block is pushed against the spring, which compresses the spring to a position of x=-0.04x=−0.04 m.

Compression is a process under which volume of the system is gradually reduced, pressure and temperature increases where heat transfer may or may not be possible. While in expansion process volume is gradually decrease with the decrease in pressure and temperature and heat transfer may or may not be possible.

Compression force or the compressive force occurs when the physical pressure pushes inward on a particle making it compacted. During this phenomenon, the relative position of the molecules and the atom of a particle changes rapidly.

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Answer:

Solid to liquid

Explanation:

Ice cubes are solid, adding heat to the beaker will melt the ice cubes to water.

Electrons do not orbit around the nucleus as a solid body-like planet around the Sun.

The electrons behave as a wave while orbiting around the nucleus and its position cannot be accurately determined as the position of the planets around the Sun.

Thus, the given statement is false.

Explanation:

Volume is the quantity of three-dimensional space enclosed by a closed surface

The si unit of mass is kilogram (kg) and the si unit of length is metre(m)

Answer:

vega the first one

pb

p

Explanation:

Answer:

A lens

Explanation:

A lens forms images when light passes Through it bending the rays of in the process.A phenomena called refraction and the speed of light changes in the process because it enters a medium since it's wavelength is reduced.

Answer:

I think its D.....

Answer:

The two of the following measurements, when taken together, would allow engineers to find the total mechanical energy dissipated during the skid

B. The contact area of each tire with the track.

C. The co-efficent of static friction between the tires and the track.

D. The co-efficent of static friction between the tires and the track.

Explanation:

According to Ohm's Law, the relationship between current (I), voltage (V), and resistance (R) is given by the equation: I = V/R.

Given:

Current (I1) = 100 milliamperes = 100 mA = 0.1 A

Resistance (R1) = 1 kiloohm = 1000 ohms

Resistance (R2) = 500 ohms

To find the current in the load when the resistance is decreased to 500 ohms, we can use the equation I2 = V/R2, where I2 is the new current and V is the voltage.

Since the current source is providing a constant current, the current (I1) will remain the same regardless of the resistance change. Therefore, we can set I1 = I2.

Using Ohm's Law, we can rearrange the equation as V = I * R.

For the initial situation:

V1 = I1 * R1

For the new situation:

V2 = I2 * R2

Since V1 = V2 (the voltage provided by the current source remains the same), we can set them equal:

I1 * R1 = I2 * R2

Substituting the given values:

0.1 A * 1000 ohms = I2 * 500 ohms

Solving for I2:

I2 = (0.1 A * 1000 ohms) / 500 ohms

I2 = 0.2 A

Therefore, when the resistance is decreased to 500 ohms, the current in the load will be 0.2 amperes or 200 milliamperes.

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Answer:

The constriction in the thermometer is to prevent the mercury from dropping back to the bulb when the reading is being taken. It is easier for us to take reading. It prevents the thermometric substance (Mercury or Alcohol) from running back into the bulb.

Explanation:

Hope it is helpful....

Answer:

constriction is made in a clinical thermometer because it prevents the thermometric liquid from running back into the bulb.

Answer:

R = 240 Ω

Explanation:

The resistance created by the light bulb can be calculated by using Ohm's Law:

\(V = IR\\\\R =\frac{V}{I}\)

where,

R = Resistance created by the light bulb = ?

V = Voltage across the bulb = 120 volts

I = current passing through the light bulb = 0.5 A

Therefore,

\(R = \frac{120\ volts}{0.5\ A}\)

R = 240 Ω