which two changes would increase the gravitational force between two objects?

The rock will take 3.5 seconds to reach the bottom when dropped off a 60 m high cliff. Therefore, option (C) is correct.

The equations of motion are equations that are used to describe the motion of an object as a function of time. These equations apply to an object moving linearly in a straight line with uniform acceleration.

The three equations of motion are represented as:

\(v = u+at\)

\(S= ut +\frac{1}{2} at^2\)

\(v^2= u^2+2aS\)

The initial velocity of the rock, u = 0

The acceleration of the rock, a= g = 9.8m/s²

The height that rock travel, S = 60m

From the equation of motion calculate the final velocity of the rock:

v² = (0)² + 2 ×9.8×60

v² = 1176

v = 34.29 m/s

From the equation of motion, calculate the time takes the rock to reach the bottom:

v = u+at

34.29 = (0) + (9.8) (t)

t = 3.5 sec

Therefore, the rock will take 3.5 seconds to reach the bottom.

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When air moves from an area of high pressure to an area of low pressure, it follows a curved path due to the Earth's rotation and the Coriolis effect. The Coriolis effect causes air to be deflected to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. This means that the path of air moving from high to low pressure will be curved as it follows the direction of the prevailing winds. However, the exact path that air takes can be influenced by other factors such as local topography, temperature gradients, and the presence of weather systems.

The Coriolis effect is the force on the earth's rotation that deflects the direction of ocean currents. The current deflection to the right occurs at the north pole while the current deflection to the left occurs at the south pole.

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Answer:

The proper answer for this question would be B. Beta Decay

Explanation:

I hope this helps

Answer:

weow hahaha lol!

Explanation:

Answer:

LOLOLOLOLOL LOL

Explanation:

Answer: d1ldo

Explanation:

(1) The angular velocity at position 1 of a uniform rod rotating freely around an axis can be determined.

(2) The velocity of the center of mass at position 2.

(1) To determine the angular velocity at position 1, we need to consider the conservation of angular momentum. Since the rod is rotating freely, there are no external torques acting on it.

The initial angular momentum is zero, and at position 1, the angular momentum is given by L = Iω, where I is the moment of inertia of the rod and ω is the angular velocity. By substituting the values of mass and length of the rod into the formula for moment of inertia, we can solve for ω.

(2) To calculate the velocity of the center of mass at position 2, relative to position 1 and at an angle theta, we can use the concept of angular velocity and linear velocity. The linear velocity of the center of mass is given by v = ωr, where ω is the angular velocity and r is the distance between the center of mass and the axis of rotation. By considering the given angle theta and the length of the rod, we can determine the distance r.

Substituting the value of ω calculated in part (1) into the formula, we can find the velocity of the center of mass at position 2, relative to position 1 and at angle theta.

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Answer:

45

Explanation:

because

The magnitude of the force that the baseball exerts on the bat is 500 N.

The given parameters;

According to Newton's third law of motion, action and reaction are equal and opposite. That is, when an object A exerts a certain force on another object B, the reaction of object B is equal to the magnitude of the force exerted by object A but in opposite direction.

Let the force the baseball exerts on the bat = F₂

then, from Newton's third law, we will have the following;

F₁ = -F₂

500 = -F₂

-500 N = F₂ (500 N is magnitude while the negative sign is the direction)

Thus, the magnitude of the force that the baseball exerts on the bat is 500 N.

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The average speed of a perfume vapor molecule is about 300 m/s at room temperature. However, the scent travels across the room at a much slower speed due to the random motion of the molecules, diffusion, and interactions with air molecules.

These factors slow down the overall movement of the scent and cause it to spread gradually. While individual perfume vapor molecules may have an average speed of 300 m/s, the scent as a whole does not move at that speed across the room. The movement of scent is primarily driven by diffusion, which is the random motion of molecules from an area of high concentration to an area of low concentration. As the perfume molecules diffuse, they collide with air molecules, other perfume molecules, and objects in the room, causing them to change direction and slow down. These interactions and collisions result in a gradual and slower spread of the scent throughout the room, rather than a rapid propagation at the individual molecule's average speed.The average speed of a perfume vapor molecule is about 300 m/s at room temperature. However, the scent travels across the room at a much slower speed due to the random motion of the molecules, diffusion, and interactions with air molecules.

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Answer: v= 80 m/s

Explanation: speed = wavelength×Frequency

The magnitude of the acceleration of the ball  applied at the bottom of the circle is expressed as FTension-FGravity/M.

You can write it down as FC = mv2 /r.

The centripetal force in a moving object attached to a string is equal to the product of the object's mass (mg) and the string tension (T).

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Answer:

20.96 m/s

Explanation:

Apply the kinematic equation:

Vf=Vi+at

Vi=8m/s

a=1.8m/s^2

t=7.2s

Putting this all in should give you your answer of 12.96m/s

The voltage is stepped up before being transmitted from a power station through overhead power lines to the consumer in order to reduce power loss and make the overhead power lines lighter, less expensive to build.

Here is the explanation why voltage is stepped up before being transmitted from a power station through overhead power lines to the consumer:

Power loss is inversely proportional to the square of the current. This means that if we can reduce the current, we can also reduce the power loss.

The current is inversely proportional to the voltage. This means that if we increase the voltage, we can reduce the current.

Therefore, by increasing the voltage, we can reduce the power loss.

In addition, the higher the voltage, the smaller the cross-sectional area of the conductors needed to transmit the same amount of power. This makes the overhead power lines lighter and less expensive to build.

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the answer is the speed of blue ball after collision is 2.6v

The statement "A spring loaded piston cylinder device is initially filled with 0.13 lbm" is false

. The mass of a substance is measured in kilograms (kg), not pounds (lbm). Therefore, the statement should be "A spring loaded piston cylinder device is initially filled with 0.13 kg." The pound-mass (lbm) is a unit of mass in the imperial system of measurement. The kilogram (kg) is a unit of mass in the International System of Units (SI). The SI is the most widely used system of measurement in the world. The mass of an object is the amount of matter it contains. The weight of an object is the force of gravity acting on it. The weight of an object changes depending on the strength of the gravitational field. The mass of an object does not change. In the statement "A spring loaded piston cylinder device is initially filled with 0.13 lbm," the mass of the substance is being described. The substance is being measured in pounds-mass, which is not a unit of mass in the SI system. Therefore, the statement is false. The correct statement would be "A spring loaded piston cylinder device is initially filled with 0.13 kg." This statement is true because the mass of the substance is being measured in kilograms, which is a unit of mass in the SI system.

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Answer:

Acceleration, a = -0.5 m/s²

Explanation:

Given the following data;

Initial velocity = 72 km/h

Final velocity = 18 km/h

Time = 10 seconds

To find the acceleration of the car;

Conversion:

72 km/h to m/s = 72*1000/3600 = 20m/s

18 km/h to m/s = 18*1000/3600 = 5 m/s

In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.

This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time.

Hence, if we subtract the initial velocity from the final velocity and divide that by the time, we can calculate an object’s acceleration.

Mathematically, acceleration is given by the equation;

\(Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}\)

Substituting into the equation;

\(a = \frac{5 - 20}{10}\)

\(a = \frac{-5}{10}\)

Acceleration, a = -0.5 m/s²

Therefore, the car is decelerating.

When there is no net force on the particle 0, the value of d₁/d₂ is √(q₂/q₁).

The distance of the particle 0 from the particle 1 is d₁ and the distance of the particle o from the particle 2 is d₂.

The particle 0 is experiences attraction from particle 2 and repulsion from particle 1.

The charges on the particle 1 and particle 2 are q₁ and q₂ respectively.

So, to experience no net force, the electrostatic forces on the particle 0 from both the particles should be equal, so we can write,

F₁ = F₂

Kq₁q₂/d₁² = Kq₁q₂/d₂²

Now, rearranging the equation,

d₁/d₂ = √(q₂/q₁)

So, the ratio of the distances is given as √(q₂/q₁).

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13.0 m/s   that's how fast he was going

7.79395 m/s² is  the effective value of g . When the acceleration of gravity, at 6100 m above the earth's surface.

At the surface of the Earth, gravity's acceleration is 9.8 ms2. Near (Radius of earth =6.4106 m), the acceleration caused by gravity drops to 4.9 ms2 above its surface. Fear not!

m = Mass of the Earth =  5.972 × 10²⁴ kg

G = gravitational constant = 6.67 × 10⁻¹¹ m³/kgs²

r = Radius of Earth = 6371000 km

a) at h = 6100 m

g = Gm/r^2

g= 6.67 × 10⁻¹¹ m³/kgs²* 5.972 × 10²⁴ kg / ( 6371000+6100)

g = 7.79395 m/s²

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Answer:

Explanation:

The mass of the bowling ball can be found by using the formula

\(m = \frac{p}{v} \\ \)

p is the momentum

v is the velocity

From the question we have

\(m = \frac{114}{12} = \frac{19}{2} = 9.5 \\ \)

We have the final answer as

Hope this helps you

Answer:

A) rational kinetic energy is conserved

For the scenario painted below Rational kinetic energy is conserved

Option A is correct

Kinetic energy is simply defined as the energy that an item or particle has as a result of its movement.

In conclusion, For A longboard is free to slide on a sheet of frictionless ice. and a skater skates to the board and hops onto one end, causing the board to slide and rotate. In this situation Rational kinetic energy is conserved

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Could someone help me? A cannon is fired with an initial horizontal velocity of 20 m/s and initial vertical velocity of 25 m/s . After 3s in the air, the canon hits its target. How far away was the canon from its target?

A high jumper leaves the ground with an initial velocity of 10 m/s rightward at an angle of 15 degrees . What is the high jumper's initial horizontal velocity?

Answer:

Its d 3.74 x 10-8N

Explanation:

Answer: 3.74 x 10-8 N

Explanation:

The centripetal acceleration of the car rounding the curve is 6.4 m/s².

The following formula determines the centripetal acceleration of an item travelling in a circular path:

a = v² / r

a = v² / r

a = (16 m/s)² / 40 m

a = 6.4 m/s²

Acceleration is the rate of change of velocity. It is a vector quantity that describes how much an object's velocity changes per unit of time. Acceleration can be positive or negative, depending on whether an object is speeding up or slowing down, respectively. Acceleration can also occur when the direction of an object's motion changes, even if its speed remains constant. This is called centripetal acceleration and is responsible for the circular motion of objects, such as a car turning a corner or a planet orbiting a star.

Acceleration plays an important role in many areas of physics and engineering, including mechanics, electromagnetism, and relativity. It is also crucial for understanding everyday phenomena, such as the motion of vehicles, the behavior of roller coasters, and the forces experienced by astronauts during spaceflight.

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Answer: about 1,100,000,000 to 1,500,000,000 Joules/second

Explanation:

1 MW (megawatt) = 1,000,000.00 J/s (joules per second)

1100(1,000,000) = 1,100,000,000

1500(1,000,000) = 1,500,000,000

Answer:

The rod gets heated up through conduction

Explanation:

Answer:

Rest and motion are relative terms. In simple terms, an object that changes its position is said to be in motion while the opposite action causes an object to be at rest.

Explanation:

The wavelength of the light wave with an energy of (6.09×10^-25) J is approximately 3.27 × 10^-7 meters or 327 nanometers.

To find the wavelength, we can use the formula: wavelength = speed of light/frequency. However, in this case, we are given the energy of the light wave, not the frequency directly. The energy of a photon can be related to its frequency using the equation: energy = Planck's constant × frequency. Rearranging the equation to solve for frequency, we have frequency = energy / Planck's constant. Substituting the given energy value (6.09×10^-25 J) and Planck's constant (6.626×10^-34 J·s) into the equation, we find: frequency = (6.09×10^-25 J) / (6.626×10^-34 J·s). Calculating the frequency, we get a frequency ≈ 9.21 × 10^8 Hz. Now, we can use the formula wavelength = speed of light/frequency. Given the speed of light (3.00×10^8 m/s), we can substitute the values: wavelength = (3.00×10^8 m/s) / (9.21 × 10^8 Hz). Simplifying, we find wavelength ≈ 3.27 × 10^-7 meters. To express the result with the correct number of significant figures, we can round it to three significant figures: wavelength ≈ 3.27 × 10^-7 meters. Alternatively, we can convert the wavelength to nanometers by multiplying by 10^9 (since 1 meter is equal to 10^9 nanometers): wavelength ≈ 327 nanometers Therefore, the wavelength of the light wave with an energy of (6.09×10^-25) J is approximately 3.27 × 10^-7 meters or 327 nanometers, expressed with the correct number of significant figures and in scientific notation.

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Answer:

B

Explanation:

The force used to move a body from one location to another is referred to as work. An energy transfer takes place whenever a force is applied. The force produces 1000 J of work.

Because the force is parallel to a horizontal table in this instance, the angle between the force and the displacement is 0 degrees. The value of the cosine at 0 degrees will be 1. So, the force can be determined as follows:

Work = Force, Distance, and Cosine.

Work = Force x Distance x One

Work Equals Force times Distance

Being:

Power = 50 N

Distance = 20 kg, resulting in:

Work = 20 kg x 50 N

Work= 1000 J

The piece is 1000 J in total.

The force used to move a body from one location to another is referred to as work. An energy transfer takes place whenever a force is applied. A force is considered to accomplish mechanical work when it applies a net force to a body or a system and causes displacement.

It is the amount of power required to drive an electron outside of the metal's conduction band. The work function can be calculated mathematically as follows: h=constant, Planck's =frequency of incident photon, W=work function, and E=maximum kinetic energy.

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