A ball strikes a wall. It exerts a force of 10 N to the left against the wall and bounces off. What force does the wall exert on the ball? 10 N to the left 10 N to the right more than 10 N to the left more than 10 N to the right

Answer:

travels

Explanation:

hope this helps and have a blessed day

Answer:

8000cm³/hr

Explanation:

Given parameters:

Volume of the liquid draining off per hour   = 8000cm³

Time taken to drain off  = 1hr

Unknown:

Flow rate  = ?

Solution:

Flow rate is the volume of fluid that passes per unit of time.

 Flow rate  = [tex]\frac{volume of fluid}{time taken}[/tex]  

 Flow rate  = [tex]\frac{8000cm^{3} }{1hr}[/tex]  

Flow rate  = 8000cm³/hr

Answer:

12m/s2

Explanation:

:D (just a smiley, not answer d)

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 3000 × 2

We have the final answer as

Hope this helps you

Answer:

I don't know but focus on that she ways less so she will have a higher velocity

My commute to school is a constant distance, but the time it takes to get there fluctuates owing to traffic.

If an object moves with respect to a reference frame, such as when a passenger travels to the back of an airliner or a professor moves to the right with respect to a whiteboard, the item's position changes.

This change in location is described as displacement.

My commute to school is a constant distance, but the time it takes to get there fluctuates owing to traffic,

The initial and the final position of the commute is the same, but the displacement varies with the route which affects my car's speed and where it is in line at stop lights.

Learn more about displacement here, refer to the link;

https://brainly.com/question/10919017

#SPJ2

Answer:

The second ball has four times as much kinetic energy as the first ball.

Explanation:

Kinetic Energy

Is the type of energy an object has due to its state of motion. It's proportional to the square of the speed.

The equation for the kinetic energy is:

[tex]\displaystyle K=\frac{1}{2}mv^2[/tex]

Where:

m = mass of the object

v = speed at which the object moves

The kinetic energy is expressed in Joules (J)

Two tennis balls have the same mass m and are served at speeds v1=30 m/s and v2=60 m/s.

The kinetic energy of the first ball is:

[tex]\displaystyle K_1=\frac{1}{2}m\cdot 30^2[/tex]

[tex]\displaystyle K_1=\frac{1}{2}m\cdot 900[/tex]

[tex]K_1=450m[/tex]

The kinetic energy of the second ball is:

[tex]\displaystyle K_2=\frac{1}{2}m\cdot 60^2[/tex]

[tex]\displaystyle K_2=\frac{1}{2}m\cdot 3600[/tex]

[tex]K_2=1800m[/tex]

Being m the same for both balls, the second ball has more kinetic energy than the first ball.

To find out how much, we find the ratio:

[tex]\displaystyle \frac{K_2}{K_1}=\frac{1800m}{450m}[/tex]

Simplifying:

[tex]\displaystyle \frac{K_2}{K_1}=4[/tex]

The second ball has four times as much kinetic energy as the first ball.

Answer:

he second ball has four X as much kinetic energy as the first ball

Explain:

Kinetic Energy Is the type of energy an object has due to its state of motion. It's proportional to the square of the speed

m/the mass of the object

v/the speed at which the object moves

The kinetic energy is expressed in Joules (J)

Two tennis balls have the same mass m and are served at speeds v1=30 m/s and v2=60 m/s.

Being m the same for both balls, the second ball has more kinetic energy than the first ball. So there for The second ball has four times as much kinetic energy as the first ball.

Answer:

Eh = 21 [J]

Removed as heat.

Explanation:

This is a case of energy conservation, we have to take into account the energies that go in and out of the system. In this case, 135 [J] of energy are entered in the form of work of the compressor to the chamber where the refrigerant is compressed, now of these 135 [J] 114 [J] were used as internal energy, this internal energy is used to increase the pressure and temperature of the refrigerant.

In this way the rest of the energy of the 135 [J] was lost in the form of heat to determine this loss of energy, we simply perform the arithmetic subtraction.

Eh = 135 - 114 = 21 [J]

Eh = 21 [J]

Explanation:

Inertia is the tendency of a body to remain at rest or to do nothing.

It is the resistance to any change in position of body.

 When the force on a body increases, the inertia reduces

 When the mass is reduced the inertia reduces

According to newton's first law or the law of inertia "an object will remain in its state of rest or of uniform motion unless if it is acted upon by an external force".

Answer:

The answer is "[tex]5 \ \frac{m}{s} \ west[/tex]"

Explanation:

[tex]\to \vec{V_1} = (25 \frac{m}{s}) (\hat{-i})\\\\\to \vec{V_2} = (20 \frac{m}{s}) (\hat{-i})\\\\[/tex]

velocity of car | respect to car :

[tex]\to \vec{V_{12}} = \vec{V_1} - \vec{V_2}\\\\[/tex]

          [tex]=\vec{-25} \hat{i}+ \vec{20} \hat{i}\\\\= 5 \ \frac{m}{s} \ west[/tex]

Answer:

70 m/s east

Explanation:

Answer:

2.625 m/s

Explanation:

This is a momentum question. Momentum is conserved which means that all the starting momentum must be accounted for.

1.5 kg * 2 m/s + 2.5 kg * 3 m's = (1.5 + 2.5)kg * x m/s

3 kg m/s + 7.5 kg m/s = 4 kg * x

10.5 kg m/s = 4 kg x

10.5 / 4 = x

x = 2.625 m/s

inelastic means that after the collision, the masses stick together as though they were one.

Answer:

letterman is shooting the kids

We use insulators to avoid being electrocuted. electricians use rubber gloves to avoid shock. Cables are insolated with rubber so you can hold them without getting shocked even if it is plugged in.

Answer:

1.2 W

Explanation:

Let the value of resistance be R , emf of battery be E

current i = E / R

power = i² R

= E² x R / R²

= E² / R

Given

E² / R = .30

when two batteries are connected

Total emf = 2E

current = 2E / R

Power = ( 2E / R )² x R

= 4 E² / R

= 4 x .30

= 1.2 W .

Answer: B. The speed will decrease.

Explanation:

When you ride a roller coaster, the wheels rub/scrape the rails, creating heat as a result of friction. And friction will slow you down. So increasing the friction on a roller coaster would slow it down.

Answer:

B

Explanation:

Friction opposes motion therefore reducing motion

Answer:  10 m/s

We're told the speed is constant, so it's not changing throughout the time period given to us. So throughout the entire interval, the speed is 10 m/s.

boiling point Gatoride

Answer: C. Light energy.

Explanation:

Answer:

Force of kinetic friction, Fk = 6N

Explanation:

Given the following data;

Coefficient of kinetic friction, μ = 0.2

Normal force, Fn=30N

To find the Force of kinetic friction;

Mathematically, the force of kinetic friction is given by the formula;

Fk = μFn

Where;

Substituting into the equation, we have;

Fk = 0.2*30

Fk = 6N

Therefore, the force of kinetic friction is 6N.

A force that is present between two moving objects or surfaces is called kinetic friction. It is estimated in newtons (N) and is calculated by:

[tex]\rm F_{k} =\rm \mu _{\rm k} F_{n}[/tex]

Where, [tex]\rm F_{k}[/tex] = frictional force,  [tex]\mu _{\rm k}[/tex]  = coefficient, [tex]\rm F_{n}[/tex] = normal force.

The kinetic friction of the object is 6N.

The kinetic friction can be estimated as:

Given,

Substituting values in the formula:

[tex]\rm F_{k} =\rm \mu _{\rm k} F_{n}[/tex]

[tex]\begin{aligned}\rm F_{k} &= 0.2 \times 30\\\\\rm F_{k} &= 6 \rm N\end{aligned}[/tex]

Therefore, 6N is the frictional force.

To learn more about frictional force follow the link:

https://brainly.com/question/1714663

Answer:

Long short

Explanation:

1

Dogs that are bigger are selected to be parents.

2

The parents are bred together, and their offspring will be different sizes.

3

The biggest offspring will be selected and bred together.

4

This cycle continues until the dogs have been selectively bred to be bigger than the current world record size.

5

Selective breeders need to ensure that they are not also selecting for disadvantageous traits, like genetic limb defects.

Ur gonna need this...

Brainliest plzzz..thanks..sorry Messy

Answer:

Geological and atmospheric changes happening over a long time scale can cause short extinctions.

Explanation:

Answer:

True

Because mitochondria is the powerhouse of the cell.

Explanation:

Hope this helps you

Answer:

True

Explanation:

Answer:

-47.04

Explanation:

Divide 12 m by 2.5 m/s which equals 4.8s

And then use 4.8s to multiply it with -9.8

4.8(-9.8)= -47.04 m/s

Hope this helped!! :)

The initial height of the pumpkin is 23.52m and the final vertical velocity of the pumpkin is 47.04 m/s.

Initial horizontal speed, u = 2.5 m/s

horizontal distance covered , d = 12m

So the time taken is:

t = d/u

t = 12/2.5 s

t = 4.8s

Now, the initial vertical speed, v = 0

So the vertical distance traveled by the pumpkin will be equal to the initial height of the pumpkin:

s = vt + ¹/₂gt²

s = 0.5 × 9.8 × 4.8 m

s = 23.52m

Final vertical velocity:

v' = v + gt

v' = 9.8 × 4.8 m/s

v' = 47.04 m/s

Learn more about laws of motion:

https://brainly.com/question/26083484?referrer=searchResults

Answer:

the answer is c. hope this help you out

The pressure at the bottom when the given tank is full of water will be 19600 Pa.

Pressure can be calculated by the formula,

[tex]\bold {P = \rho h g}[/tex]

Where,

P- pressure = ?

[tex]\bold {\rho}[/tex] - density of water = 1000 kg/m²

h - height of water = 2 m

g - gravity acceleration = 9.8 m/s

Put the values in the formula

[tex]\bold {P = 2 \times 1000 \times 9.8} \\\\\bold {P = 19600\ Pa}[/tex]

Therefore, the pressure at the bottom when the given tank is full of water will be 19600 Pa.

To know more about pressure,

https://brainly.com/question/23603188

Answer:

-6.25 m/s

Explanation:

i took the quiz

Answer:

Momentum is a product of mass and velocity.

Explanation:

Hope this helps you

Crown me as brainliest:)

Answer:

So waves are everywhere. But what makes a wave a wave? What characteristics, properties, or behaviors are shared by the phenomena that we typically characterize as being a wave? How can waves be described in a manner that allows us to understand their basic nature and qualities?

A wave can be described as a disturbance that travels through a medium from one location to another location. Consider a slinky wave as an example of a wave. When the slinky is stretched from end to end and is held at rest, it assumes a natural position known as the equilibrium or rest position. The coils of the slinky naturally assume this position, spaced equally far apart. To introduce a wave into the slinky, the first particle is displaced or moved from its equilibrium or rest position. The particle might be moved upwards or downwards, forwards or backwards; but once moved, it is returned to its original equilibrium or rest position. The act of moving the first coil of the slinky in a given direction and then returning it to its equilibrium position creates a disturbance in the slinky. We can then observe this disturbance moving through the slinky from one end to the other. If the first coil of the slinky is given a single back-and-forth vibration, then we call the observed motion of the disturbance through the slinky a slinky pulse. A pulse is a single disturbance moving through a medium from one location to another location. However, if the first coil of the slinky is continuously and periodically vibrated in a back-and-forth manner, we would observe a repeating disturbance moving within the slinky that endures over some prolonged period of time. The repeating and periodic disturbance that moves through a medium from one location to another is referred to as a wave.

Hope That Helps!!

Explanation:

Answer:

Explanation:

Angle of refraction is the angle made by refracted ray with the normal at the point of incidence . In this figure , refracted ray has been shown by line having arrow-head . Normal has been shown by broken line .

We observe that in figure D , angle made by refracted ray with normal is greatest . So figure D is the answer.

The  image where the angle of refraction is the greatest is the image D

The angle of refraction is the angle that the refracted ray made with the x-axis.

The higher the angle between the refracted ray and the x-axis, the higher the angle of refraction and vice versa.

From the given diagram, we can see that the  image where the angle of refraction is the greatest is the image D

Learn more on angle of refraction here: https://brainly.com/question/15838784

Answer:

The required velocity of runner is 4m/s.