please help!!!!!!!!!!!!! i will give brainly

1.) Define force? Give an example.

2.) Define Newton's 1st Law? Give an example.

3.) Define Newton's 2nd Law? Give an example.

4.) Define Newton's 3rd Law? Give an example.

Answer:

11.408 joules

Explanation:

soln

From the question above

Mass of ball = m = 1.84kg

Height of ball when dropped = 1.49m

Height of ball when it bounces back up = 0.87m

Recall

Potential energy (P.E) = mass × height × g

Kinetic energy(K.E) = 1/2 × mass × (velocity)²

Mechanical energy = K.E + P.E

M.E lost = M.E when ball dropped – M.E when ball bounces back up

Recall that g = acceleration due to gravity = 10ms²

P.E/K.E when ball dropped = 1.84 × 1.49 × 10

P.E/K.E when ball dropped = 27.416J

P.E/K.E when ball bounces back = 1.84 × 0.87 × 10

P.E /K.Ewhen ball bounces back = 16.008J

Since P.E = K.E

M.E when ball dropped = 27.416J

M.E when ball bounces back = 16.008J

Therefore,

M.E lost = 27.416 - 16.008

M.E lost = 11.408Joules

The most recent information you can get about this star is near 10 years old.

A light-year is a distance unit, that represents the distance that light can travel in one year.

Now, we know that nothing can move faster than the speed of light, and the only information that we can get about this star comes through light (electromagnetic waves). And these waves travel at the speed of light.

So these waves would need at least 10 years to travel from the start to the satellites that can detect them, this means that the most recent information that you can get about this star is actually 10 years old.

If you want to learn more about electromagnetic waves, you can read:

https://brainly.com/question/14015797

Explanation:

F = qE

where E is an electric field.

The denser lines of electric force are, the stronger electric field will be.

Since 4 is densest part, electric force on 4 is would be greatest.

The electric field would be stronger the denser the lines with electric force are. Since part 4 is the densest, its electric force would be greatest. Therefore, the correct option is option 4.

The force acting on the items is referred to as the electric force. When two electrons and two protons are put at equal distances, the electric force that separates them is equivalent to the electrostatic charge between the two.

The electric force primarily reliant on the quantity known as electric charge rather than the object's mass. Forces involving charges are the subject of electrostatics. Static refers to charges that aren't moving, or are moving very slowly. The electric field would be stronger the denser the lines with electric force are. Since part 4 is the densest, its electric force would be greatest.

Therefore, the correct option is option 4.

To know more about electric force, here:

https://brainly.com/question/30508497

#SPJ7

Answer:

C, proof that the driver has life insurance.

Explanation:

Answer:

Option A

Force applied to an object and distance it moved.

Explanation:

The size of the force applied and the distance something moves.

W = F • d

-TheUnknownScientist 72

Answer:

The filament is coiled to give it greater length. If the filament was just a piece of straight wire it would only give out a small amount of light. By curling the wire into a coil, a very long length of wire can be stored in a small space. When electricity flows through the coil it can give out much more light.

They will be instructed to park their cars in a cool dry environment in order to prevent rusting of the vehicle parts.

This is defined as a chemical change in which Iron reacts with Oxygen to form a new substance called Iron oxide.

Iron oxide is usually brownish in color and further corrodes the metal parts. It is also referred to as a Chemical change in chemistry due to new substance being formed.

Read more about Rusting here https://brainly.com/question/153893

Answer:

None of the light energy from the sun can be used directly to fuel cellular work. First it must be captured in the bonds of a molecule called adenosine triphosphate (ATP).

Explanation:

Hi there!

Recall the equation for gravitational potential energy:

[tex]U = mgh[/tex]

U = GPE (J)
m = mass (48 kg)
g = acceleration due to gravity (9.8 m/s²)
h = height (21 m)

Plug in the givens and solve.

[tex]U = (15 + 33)(9.8)(21) = \boxed{9878.4 J}[/tex]

Answer:

Hope This will help you

From the calculation, the kinetic energy of the moving car is 12.5 m/s.

The term kinetic energy refers to the energy that a body possesses as a result of its motion. It is the energy of a moving body.

Now we know that the kinetic energy is  125,000 J and the mass is 1,600 kg. Now;

KE = 1.2 mv^2

v = √2KE/m

v = √ 2 * 125000/1600

v = 12.5 m/s

Learn more about kinetic energy:https://brainly.com/question/12669551

#SPJ9

The velocity of the wreckage immediately after the impact is mathematically given as

v=12.284m/s

Question Parameters:

A 2035 kg Oldsmobile traveling east on Saginaw Street at 15.8 m/s is unable to stop on the ice covered intersection for a red light at Abbott Road.

The car collides with a 4012 kg truck hauling animal feed north on Abbott at 10.5 m/s

Generally the equation for the speed after collision   is mathematically given as

mu +MU = ( m + M) v

Therefore

v = ( 2035*15.8 + 4012*10.5 ) / ( 2035+ 4012)

v=12.284m/s

For more information on Speed

https://brainly.com/question/4931057

The resultant force is the overall force. If two forces are acting in the same direction, the resultant force is the sum of all the forces.

Happy to help!

The resultant force is the overall force. If two forces are acting in the same direction, the resultant force is the sum of all the forces. Hence the blanks where r and s are resultant force and sum respectively.

Force is an external factor, which aids a body to change from the state of motion or rest.  There are different types of forces namely, magnetic force, gravitational force, nuclear force, frictional force etc.

The unit of force is newton. According to Newton's second law of motion, the force acting on a body is the product of its mass and acceleration. Thus we have the equation F = ma.

If a body experience's different forces or the same forces in different direction the net force in after all balancing is called the resultant force.  

Now, if two forces are acting on the same direction, the resultant force will be the sum of these forces.

Therefore, the blanks in the place of r and s are resultant and sum respectively.

To find more about force, refer the link below:

https://brainly.com/question/13191643

#SPJ2

Answer:

The sun's gravity pulls the planet toward the sun, which changes the straight line of direction into a curve. This keeps the planet moving in an orbit around the sun. Because of the sun's gravitational pull, all the planets in our solar system orbit around it.

Answer:

nobody knows

Explanation:

Answer:

  refraction

Explanation:

When a wave crosses a boundary between media at an angle other than normal to the boundary, it will be refracted by an amount depending on the relative speeds of the wave in the different media.

The change in direction that Samir observes is due to refraction of the wave as it slows down in shallower water.

An object in projectile motion will follow curved up from the ground, curved down toward the ground. The correct options are (a) and (b).

An object in projectile motion will follow a curved path. Specifically, it will follow a curved trajectory that is symmetric around the highest point of its flight. The object will initially move horizontally while also experiencing vertical motion due to the force of gravity. As a result, the object's path will be a parabolic curve.

So, the correct answer is Curved up from the ground (when initially launched) and curved down toward the ground (when it reaches the highest point and descends). The correct options are (a) and (b).

To know more bout the projectile motion:

https://brainly.com/question/12860905

#SPJ5

Answer:

He began organizing the known elements according to their atomic weights and chemical properties.

Explanation:

We have that the new height of the crate  is mathematically given as

Hn=0.56

Question Parameters:

A 50N crate is lifted 0.86m from the ground

then is allowed to drop losing 15 J of energy.

Generally the equation for the Potential energy  is mathematically given as

P.E=mgh

Where

m=50/9.8

Therefore

h=15/(50/9.8*9.8)

h=0.3m

New height

0.86-0.3

Hn=0.56

For more information on Measurement visit

https://brainly.com/question/17972372

Answer:

A. 490

Explanation:

soln

mass = m = 5kg

Height = h = 10m

Acceleration due to gravity = g = 9.8ms²

K.E = 1/2 × mass × (velocity)²

Recall from equations of motion

v² = u² + 2gh

Therefore,

K.E = 1/2 × mass × ( u² + 2gh)

K.E = 1/2 × 5 × ( 0² + 2×10×9.8)

K.E = 1/2 × 5 × 196

K.E = 1/2 × 980

K.E = 490 Joules

Answer:

An endothermic reaction is a chemical reaction in which more energy is needed to break bonds in the reactants than is released when new bonds form in the products.

A constant input of energy, often in the form of heat, is needed to keep an endothermic reaction going.

Explanation:

A would be the answer

Answer:

A reaction that contributes energy to the surroundings

Explanation:

When energy is taken in from the Surroundings, the temperature of the surroundings decreases

Latent heat is the heat required to change the phase. When the temperature remains constant during melting or boiling the added energy is employed in the phase change process.

The average kinetic energy (KE) is defined as the one-half of the mass of each gas molecule times multiplied by the square of RMS velocity.

[tex]KE = \frac{1}{2}m (V_{rms})^{2}[/tex]

where,

KE is the kinetic energy

m is the mass of each molecule

(V)rms is the RMS velocity

As we know since the temperature is increasing the average kinetic energy of the particle increases. So the added energy is utilized in the sensible heat due to which the temperature of the body increases resulting in the increase in average kinetic energy

But when the temperature remains constant during melting or boiling the added energy is converted into latent heat energy utilized to convert the phase of a substance.

To learn more about the average kinetic energy refer to the link ;

https://brainly.com/question/24134093

it is an example of a translucent object

Answer:

The density of a substance is the relationship between the mass of the substance and how much space it takes up

Explanation:

thats it  take my word hope thats what u meant

Density is a measure of mass per unit of volume. Density is a measure of mass per volume. The average density of an object equals its total mass divided by its total volume. An object made from a comparatively dense material (such as iron) will have less volume than an object of equal mass made from some less dense substance (such as water). Perhaps the highest density known is reached in neutron star matter. The singularity at the centre of a black hole, according to general relativity, does not have any volume, so its density is undefined.

The Answer to this question is Number B.

Answer :- B

Answer:

hydrogen and helium

Explanation:

From left to right, the outer planets are Jupiter, Saturn, Uranus, and Neptune. The gas giants are made up primarily of hydrogen and helium, the same elements that make up most of the Sun.