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part one...

The force of gravity between 1-kg mass and a 2-kg mass that is 1 m apart is 1.334 x 10⁻¹⁰ N.

The force of gravity between 1-kg mass and a 2-kg mass that is 2 m apart is 3.34 x 10⁻¹¹  N.

The force of gravity between 2-kg masses that is 1 m apart is 2.67 x 10⁻¹⁰  N.

The force of gravity between the objects is calculated by applying Newton's law of universal gravitation.

F = Gm₁m₂ /r²

where;

Force of gravity between 1-kg mass and a 2-kg mass;

F = ( 6.67 x 10⁻¹¹ x 1 x 2 ) / ( 1² )

F = 1.334 x 10⁻¹⁰ N

Force of gravity between 1-kg mass and a 2-kg mass that is 2 m apart;

F = ( 6.67 x 10⁻¹¹ x 1 x 2 ) / ( 2² )

F = 3.34 x 10⁻¹¹  N

Force of gravity between 2-kg masses that is 1 m apart;

F = ( 6.67 x 10⁻¹¹ x 1 x 2 ) / ( 1² )

F = 2.67 x 10⁻¹⁰  N

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Answer:

a) a = 2.35 m/s^2

Explanation:

(a) In order to calculate the magnitude of the acceleration of the ball, you use the following formula, for the position of the ball:

\(x=v_ot+\frac{1}{2}at^2\)     (1)

x: position of the ball after t seconds = 87 m

t: time  = 8.6 s

a: acceleration of the ball = ?

vo: initial velocity of the ball = 0 m/s

You solve the equation (1) for a:

\(x=0+\frac{1}{2}at^2\\\\a=\frac{2x}{t^2}\)

You replace the values of the parameters in the previous equation:

\(a=\frac{2(87m)}{(8.6s)^2}=2.35\frac{m}{s^2}\)

The acceleration of the ball is 2.35 m/s^2

Oldest: Red Giant in globular cluster M13 AND red main-sequence star in globular cluster M13

Middle: the sun

Youngest: Hot, blue main-sequence star in disk

What is globular cluster?

Globular clusters, which include tens of thousands to millions of stars, are stable, firmly bound clusters. They are connected to all different kinds of galaxies. Globular clusters are strongly gravitationally bound and often larger than open clusters.

As a result, the Milky Way's globular clusters (which house extremely old stars) show a spherical component, whilst the open clusters, other young stars, and star-forming areas show a disk-shaped component.

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The height of the satellite Aldock in orbit is approximately 1,419,288 meters or 1,419.3 kilometers above the Earth's surface.

The height of a satellite in orbit around the Earth can be calculated using the following formula:

h = (GMt/4π²)^(1/3) - Re

where:

To solve for h, we need to know the mass of the satellite and the speed of its orbit. However, we can use the given information that the Earth exerts a force of 5000N on the satellite to calculate the speed of the orbit using the centripetal force equation:

F = mv^2/r

where:

Solving for v, we get:

v = √(Fr/m)

v = √((5000 N) * (6,371,000 m)) = 7919.26 m/s

Now that we know the speed of the orbit, we can use the first formula to solve for the height of the satellite:

h = (GMt/4π²)^(1/3) - Re

Substituting the given values, we get:

h = [(6.67430 × 10^-11 m^3/kg/s^2) * (5.972 × 10^24 kg) / (4π²)]^(1/3) - 6,371,000 m

= 1,419,288 m

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Answer: A bear

Explanation:

I think it is a bear because in the North pole it swims to get food and walks in land to hide.

A cell of inter resistance of 0.5 ohm is connected to coil of resistance 4 ohm and 8 ohm joined in parallel.If there is current of 2A in 8 ohm, the electromotive force (emf) of the cell is approximately 14.5 volts.

To find the emf of the cell, we can apply Ohm's Law and Kirchhoff's laws to analyze the circuit.

Given:

Resistance of the coil, R1 = 4 ohm

Resistance of the other resistor, R2 = 8 ohm

Current passing through the 8-ohm resistor, I = 2A

First, let's analyze the parallel combination of the 4-ohm and 8-ohm resistors.

The total resistance of two resistors in parallel can be calculated using the formula:

1/Rp = 1/R1 + 1/R2

Substituting the given values, we have:

1/Rp = 1/4 + 1/8

1/Rp = 2/8 + 1/8

1/Rp = 3/8

Rp = 8/3 ohm

Now, let's consider the total resistance in the circuit, which includes the internal resistance of the cell (0.5 ohm) and the parallel combination of the resistors (8/3 ohm).

R_total = R_internal + Rp

R_total = 0.5 + 8/3

R_total = 1.833 ohm

Now, we can find the emf of the cell using Ohm's Law:

emf = I * R_total

emf = 2 * 1.833

emf ≈ 3.667 volts

Therefore, the emf of the cell is approximately 3.667 volts.

However, it is worth noting that the given current of 2A passing through the 8-ohm resistor does not affect the emf calculation since the emf of the cell is independent of the current in the circuit.

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The answer is C

Please dont get mad at me if this is not right im pretty sure it is
hope this helps!

Answer:

when it has a fewer amount of electrons than protons

Sedimentation ponds are useful for reducing the effects of soil erosion because : ( D ) They provide a place to collect soil sediments so that it doesn't reach ponds, lakes and rivers

Sedimentation ponds are ponds that hold sediments and suspended solids discharged by runoff waters thereby preventing the soil sediments from reaching water bodies such as ponds, lakes and rivers.

The sediment ponds hold the water while allowing the debris and solids contained in the water to settle down.

Hence we can conclude that sedimentation ponds provide a place to collect soil sediments so that it doesn't reach ponds, lakes and rivers

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We know that the coefficient of static friction of wood on wood surfaces is normally found between 0.25 and 0.55.

The distance traveled by the elevator is 2.0136 m.

Given values: Mass, m = 602 kg. Initial velocity, u = 0 m/s. Time taken, t = 2.60 s. Final velocity, v = 1.72 m/s.(a) Find the acceleration of the elevator. The formula to calculate the acceleration is given below:

a = (v - u)/t Substitute the given values in the above equation and get the acceleration value.

a = (1.72 - 0)/2.60a = 0.6615 m/s²Therefore, the acceleration of the elevator is 0.6615 m/s².

(b) Find the distance traveled by the elevator. The formula to calculate the distance is given below:

s = ut + 1/2at²Substitute the given values in the above equation and get the distance traveled by the elevator.

s = 0(2.60) + 1/2(0.6615)(2.60)²s = 2.0136 m.

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The best way of presenting the information on density graphically would be to use a D, bar graph.

A bar graph is a type of chart that uses rectangular bars to represent data. The bars are typically arranged in columns, with the independent variable (in this case, the type of wood) on the x-axis and the dependent variable (in this case, the density) on the y-axis.

A bar graph is the best choice for this data because it allows for easy comparison of density of different types of wood. We can see at a glance which type of wood is the densest and which type of wood is the least dense.

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Answer: A

Explanation:

Answer:

ON

Explanation:

Locate your computer's Power button.

Press and hold that button until your computer shuts down.

Wait until you hear the computer's fans shut off, and your screen goes completely black.

Wait a few seconds before pressing and holding the power button to initiate your computer's normal startup.

Given:

Weight = 1000 pounds

Let's solve for the following:

• (a). wWhat is the gravitational force that you exert on earth?

Let's first convert the mass from pounds to kilogram.

Where:

1 pound =0.453592

We have:

Therefore, the mass is 453.6 kg

According to Newton's third law, for every action there is an equal and opposite reaction.

Now, let's find the weight of the body:

Where:

w is the weight

m is the mass

g is acceleration due to gravity = 9.8 m/s²

Thus, we have:

The weight of the body is 4445.28

The gravitational force that the Earth exerts on you will also be the weight of your body.

Therefore, the gravitational force the Earth exerts on you is 4445.28 N.

According to Newton's third law the gravitational force that you exert on the earth is -4445.28 N.

ANSWER:

• (a). -4445.28 N

• (b). 4445.28 N

Answer:

They eat Himalayan blue sheep, boar, deers, wild mountain goats, pikas etc.

Explanation:

Walking, running, and breathing are examples of motion. For rolling of ball, the street is a frame of reference and an insect on the ball is an inappropriate frame of reference.

A frame of reference, also known as a reference frame, is a perspective used in physics to assess whether an object is moving.  A frame of reference is an environment or object that is thought to be stationary. The Earth itself, despite its motion, serves as the most frequently used frame of reference.

Some examples of motion are:

Motion is a part of many of our daily activities, including walking, running, closing doors, etc.

Another illustration of motion is the passage of air into and out of our lungs.

The vehicles that transport passengers between the point of pickup and the destination have motion.

A ball is rolling down the street that it is moving.

For a ball rolling down the street, the street is an appropriate frame of reference as it is rest as compared to the ball.

For the same example, the insect sitting on the rolling ball is a part of the rolling ball.

Therefore, the insect is an inappropriate frame of reference for the motion of the ball rolling down the street.

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The magnitude of OC is approximately 5.8 units, and the angle between the x-axis and vector OC is approximately 59.0 degrees

To evaluate the magnitude of vector OC, which is represented by vector C = (-3, -5), we can use the formula for the magnitude of a vector. The magnitude of a vector (denoted as ||v||) can be calculated using the Pythagorean theorem.

Magnitude of OC = ||C|| = √((-3)^2 + (-5)^2) = √(9 + 25) = √34 ≈ 5.8

To find the angle between the x-axis and vector OC, we can use trigonometry. The angle can be determined by finding the arctan of the y-component divided by the x-component of vector C.

Angle = arctan(-5 / -3) = arctan(5/3) ≈ 59.0 degrees

Therefore, the magnitude of OC is approximately 5.8 units, and the angle between the x-axis and vector OC is approximately 59.0 degrees (rounded to the nearest tenth).

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Answer:

False

Explanation:

Answer:

False because cells depend on the others and absolutely positively CANNOT work alone.

Explanation:

The time elapsed between the first splash and the second splash is approximately 0.69 seconds.

To calculate this, we consider the motion of two rocks thrown simultaneously from a bridge. Heather throws a rock straight down with a speed of 14 m/s, while Jerry throws a rock straight up with the same speed.

We use the equation for displacement in uniformly accelerated motion: s = ut + (1/2)at^2.

For Heather's rock, which is thrown downwards, the initial velocity (u) is positive and the acceleration (a) due to gravity is negative (-9.8 m/s^2). The displacement (s) is the height of the bridge (46 m).

Solving the equation, we find two possible values for the time (t): t ≈ -4.91 s and t ≈ 1.91 s.

Since time cannot be negative in this context, we discard the negative value and consider t ≈ 1.91 s as the time it takes for Heather's rock to hit the water.

For Jerry's rock, thrown upwards, we use the same equation with the same initial velocity and acceleration. The displacement is also the height of the bridge, but negative.

Solving the equation, we find t ≈ -5.68 s and t ≈ 1.22 s. Again, we discard the negative value and consider t ≈ 1.22 s as the time it takes for Jerry's rock to reach its maximum height before falling back down.

To find the time difference between the first and second splash, we subtract t ≈ 1.91 s (Heather's rock) from t ≈ 1.22 s (Jerry's rock). This gives us a time difference of approximately 0.69 seconds.

Therefore, the time elapsed between the first splash and the second splash is approximately 0.69 seconds.

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The average speed of the elderly woman walking around the shopping center is 1.80 km/h.

To calculate the average speed of the elderly woman, we can use the formula for velocity, which is equal to the distance traveled divided by the time taken. In this case, the distance traveled is 0.30 km and the time taken is 10 minutes. However, average speed is generally expressed in units of distance per unit of time, so we need to convert minutes to hours.

There are 60 minutes in one hour, so 10 minutes is equal to 10/60 = 1/6 hours.

Now we can calculate the average speed by dividing the distance traveled (0.30 km) by the time taken (1/6 hours):

Average speed = 0.30 km / (1/6 h)

= 0.30 km * (6/1 h)

= 1.80 km/h

Therefore, the average speed of the elderly woman walking around the shopping center is 1.80 km/h.

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Answer:

Explanation:

The horizontal velocity is 1.61.

A student uses a ruler to measure the length and width of a small rectangular metal plate. 14.7 \(\rm cm^2\) is the area of the plate. Therefore, the correct option is option C.

The size or extent of a two-dimensional surface is described by the mathematical concept of area. It is a measurement of the area contained by a closed figure on a flat surface, such as a square, rectangle, circle, triangle, or other. Depending on the measurement system being used, the area of a form is often stated in square units, such as square metres (m2), square feet (ft2), square centimetres (cm2), or square inches (in2).

Length, l=4.2 cm

width, w=3.5 cm

Area, A=lw

=3.7×3.5

=14.7 \(\rm cm^2\)

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Your question is incomplete but most probably your full question was,  

Potholder should have high insulation and low conductivity, therefore the correct answer is the option B

Insulation is a type of material used to create barriers to the transmission of the form of energy which either is in form of heat or electricity.

For outdoor trips in cold weather, several thin layers act as better insulating barriers for heat transfer.

The ability of an electric charge or heat to pass through a material is measured by its conductivity. A material is considered a conductor if it offers very little resistance to the flow of thermal or electric energy.

Thus, Potholders should be highly insulated and have low conductivity, therefore the correct answer is the option B

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your question seems incomplete, the complete question is

To be effective, a pot holder should have low _____. viscosity conductivity malleability density

Answer:

Explanation:

C looks good,  b/c antinodes are where the waves is at a max displament.

The wave has exactly three antinodes is option C.

As in all status wave styles, each node is separated through an antinode. This sample with 3 nodes and two antinodes is known as the second one harmonic and is depicted within the animation.

The other of a node is an anti-node, a factor where the amplitude of the status wave is at most. those occur midway among the nodes. In a full wavelength of a status wave, there are two loops. So, there should be  nodes midway of every of the two loops.

Wave, propagation of disturbances from location to vicinity in a ordinary and prepared manner. maximum acquainted are floor waves that journey on water, however sound, mild, and the movement of subatomic particles all exhibit wavelike residences.

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The distance the ball was thrown is 52.22m by A quarterback throws a pass at an angle of 35° above the horizontal with an initial speed of 25 m/s. The ball is caught by the receiver 2.55 seconds later.

Every motion under constant acceleration is projectile motion

Angle above horizontal Ф = 35°, initial speed v1 = 25m/s , time 2.55s

Substituting value in the below equation

x=x₁ + (v₁*cosθ)(t)+1/2 *a*t²

a= 0 as acceleration in horizontal direction is zero

x= 25*cos(35)*2.55

x=52.22 m

Projectile motion is a form of motion in which object influenced when it is launched into the gravitational force from the surface of Earth along a curved path.

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