A stone is thrown horizontally from the top of a 25.00-m cliff. The stone lands at a distance of
40.00 m from the edge of the cliff. What is the initial horizontal velocity of the stone?

Answer:

The ideal temperature of catalase activity is 66.6 degrees Celsius, so a temperature between 60 degrees and 70 degrees should most likely release the most oxygen during the reaction.

Explanation:

Answer:

This will take me a min hold up

Explanation:

11: if the charge INCREASES then so does the force

12: x2

13: x3

14: be  like x4 i think.. yeah x4

Erm table 1: 0.6N, 1.2N, 1.8N

and table 2 I think: 0.6N, 2.4 N, 5.4N

Answer:

The ocean

Explanation:

Answer:

plant cell

Explanation:

because it has chloroplast

Explanation:

Wouldn't this just be 90+80 meaning the answer would be 170?

Answer:

D

Explanation:

because the slope decreases

Answer:

Should be D the correct answer

Explanation:

Answer:

Decrease the distance between the two objects

Increase the distance between the two objects  to decrease the gravitational force between two objects.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

The gravitational constant, denoted by the capital letter G, is an empirical physical constant involved in the calculation of gravitational effects in Sir Isaac Newton's law of universal gravitation and in Albert Einstein's theory of general relativity.

f = Gmm/r²

Increase the distance between the two objects  to decrease the gravitational force between two objects.

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The right option must be option (B).

Since the orbit of the earth is only 3% oblate, it is closer to a circle.

According to Kepler's laws of planetary motion:

So according to Kepler's law, it would seem that the answer must be option A. And it can be the right choice generally.

But the orbit of earth is only 3% oblate, which means it is only 3% an ellipse, so the orbit of the earth is closer to a circle. So the right option must be option B.

Learn more about Kepler's laws:

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Answer:

Shape B

Explanation:

Answer:

Explanation:

light gets energy from the battery,

battery gets energy from the generator

flywheel gets energy from the crank

Answer:

A) D = 57.8

B) 900 sec

C) 1.11 x 10^-3 HZ

D) V= 0.016m/s

E) 1.12x10^-4m/s

F) 2.24 x 10^-3 N

Answer:

The magnitude of the net force is 0.204 N.

Explanation:

The net force acting upon the air glider is:

[tex] F = ma [/tex]

Where:

m: is the mass of the air glider = 1.5 kg

a: is the acceleration

First, we need to find the acceleration. Since we have the initial and final speed we can calculate the acceleration as follows:

[tex] v_{f}^{2} = v_{0}^{2} + 2ad [/tex]

Where:

[tex]v_{f}[/tex]: is the final speed = 1.798 m/s

[tex]v_{0}[/tex]: is the initial speed = 1.872 m/s

d: is the distance = 1 m

The acceleration is:

[tex] a = \frac{v_{f}^{2} - v_{0}^{2}}{2d} = \frac{(1.798 m/s)^{2} - (1.872)^{2}}{2d} = -0.136 m/s^{2} [/tex]            

The minus sing is because the air glider is desaccelerating.

Now, the magnitude of the net force is:

[tex] |F| = ma = 1.5 kg*0.136 m/s^{2} = 0.204 N [/tex]

Therefore, the magnitude of the net force is 0.204 N.

I hope it helps you!

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Work Shown:

The values we're working with are

[tex]v_i = 0 = \text{ initial velocity}\\\\v_f = 16 = \text{ final velocity}\\\\t = 4 = \text{ change in time}\\\\a = \text{ unknown } = \text{ acceleration}\\\\[/tex]

We'll plug those into the kinematics formula below to solve for 'a'

[tex]v_f = v_i + a*t\\\\16 = 0 + a*4\\\\16 = 4a\\\\4a = 16\\\\a = \frac{16}{4}\\\\a = 4\\\\[/tex]

Joe's acceleration is 4 m/s^2

This means that every second, Joe's velocity is increasing by 4 m/s.

---------------------------

To check our answer, we can see that

Time 0 = Velocity 0

Time 1 = Velocity 4

Time 2 = Velocity 8

Time 3 = Velocity 12

Time 4 = Velocity 16

This confirms our answer.

Answer:  The cell shrinks

Explanation:   Seawater is hypertonic. If you place an animal or a plant cell in a hypertonic solution, the cell shrinks, because it loses water ( water moves from a higher concentration inside the cell to a lower concentration outside ). So if you get thirsty at the beach drinking seawater makes you even more dehydrated.

Answer:

Acceleration, a = 0.375 m/s²

Explanation:

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;

[tex]Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}[/tex]

[tex]a = \frac{v - u}{t}[/tex]

Where,

Given the following data;

Initial velocity, u = 0m/s

Final velocity, v = 0.3m/s

Time, t = 0.8secs

Substituting into the equation, we have;

[tex]a = \frac{0.3 - 0}{0.8}[/tex]

[tex]a = \frac{0.3}{0.8}[/tex]

Acceleration, a = 0.375 m/s²

Therefore, the the magnitude of the vacuum's acceleration is 0.375 m/s²

Answer:

Mass, M = 0.75kg

Explanation:

Kinetic energy can be defined as an energy possessed by an object or body due to its motion.

Mathematically, kinetic energy is given by the formula;

[tex] K.E = \frac{1}{2}MV^{2}[/tex]

Where, K.E represents kinetic energy measured in Joules.

M represents mass measured in kilograms.

V represents velocity measured in metres per seconds square.

Given the following data;

Kinetic energy = 150J

Velocity = 20m/s

Making mass the subject formula;

[tex] M = \frac{2K.E}{V^{2}}[/tex]

Substituting into the equation, we have;

[tex] M = \frac{2*150}{20^{2}}[/tex]

[tex] M = \frac{300}{400}[/tex]

Mass, M = 0.75kg

Answer:

10

Explanation:

U=0

V=?

a=2

times=5

a=(v-u)÷t

2=(x-0)÷5

10=x-0

10ms^-1=x

Answer:

10 m/s

Explanation:

Multiply 2 m/s by 5.

1 second: 2 m/s

2 seconds: 4 m/s

3 seconds: 6 m/s

4 seconds: 8 m/s

5 seconds: 10 m/s

This can also be solved by y=mx+b, where y is speed, m is the m/s, so 2, x is time, we want to find what y equals when x=5, and b is starting speed, which is 0 m/s, since the runner is starting from a rest.

In short, this is:

x=5

y=2x

y=2(5)

y=10

Answer:

a neutralization reaction is when a action in a base react to form water and salt it also

neutralization is where and where are the acid reacts with a nuclear to form a netural soution of a salt and water

Explanation:

it involves the combination of H plus ions oh- to generate water it means when a solution is neutralized it means that salts are formed from equal weights of acid and base please mark this brainiest please

Answer:

divide 2 by 2

Explanation:

Answer:

5.88 m/s

Explanation:

The following data were obtained from the question:

Initial velocity (u) = 7 m/s

Acceleration (a) = –0.6 m/s²

Distance (s) = 12 m

Final velocity (v) =.?

We, can determine how fast the sprinter is running when he crosses the goal line as follow:

v² = u² + 2as

v² = 7² + (2 × –0.6 × 12)

v² = 49 + (–14.4)

v² = 49 – 14.4

v² = 34.6

Take the square root of both side

v = √34.6

v = 5.88 m/s

Therefore, the sprinter is running at a speed of 5.88 m/s when he crosses the goal line.

Answer:

The boiling point on top of a mountain would be lower than at sea level because the altitude would be higher and air pressure would decrease.

As the height increases, because most of the air molecules are held near to the surface and hence pressure by gaseous substance will be lower at higher altitudes results in lowering boiling point also.

Boiling point of a substance is the temperature at which the substance changes from the liquid state to vapor state where both  phases are in equilibrium and the pressure of vapor phase above the liquid phase will be equal to the atmospheric pressure.

The boiling point is dependent on the bond type, molecular weight, temperature and pressure. At higher altitudes, the pressure will be reduced due to the less denser air.

The volume of gas molecules is higher on elevation and thus, a decreased pressure causes, the water molecules easily boil with weekend intermolecular force thus, boiling point at mountain will be less than that at sea level.

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Answer:

fiber optics props

Explanation:

Answer:

fell DOWN 14.87m

Explanation:

vf^2=vi^2+2adeltax

[(17.07 m/s)^2-(0)^2]/[2*(-9.8 m/s2)]= deltax

x=-14.87 m

fell DOWN 14.87m

Answer: D. -5

It is -5 because you subtract 13 from 8 to get to the answer.

Answer:

d -5 m

Explanation:

bc 8 subtract by 13 = 5

Take the direction of motion to be the positive direction. The crate slows to a rest from 30.0 m/s in a matter of 5.0 s, so it has acceleration a such that

0 = 30.0 m/s + a (5.0 s)   →   a = -6.0 m/s²

At the moment its speed is 0, the crate has a net force of s + f acting in negative direction, where s and f denote the magnitudes of the stopping force (s = 250 N) and the friction force, respectively. By Newton's second law, we have

(-s) + (-f) = (100 kg) (-6.0 m/s²)

250 N + f = 600 N

f = 350 N

The friction force is proportional to the normal force by a factor of µ, the coefficient of kinetic friction. There is no movement in the up- and downward directions, so Newton's second law says

(-w) + n = 0

where w is the weight of the crate and n is the magnitude of the normal force. So

n = w = (100 kg) (9.80 m/s²) = 980 N

Then

f = µ n

350 N = µ (980 N)

µ = (350 N) / (980 N) ≈ 0.357

Answer:

25.56 m

Explanation:

For vertical movement , initial velocity u = 0

Displacement  h = 2 m

time taken = t

h = ut + 1/2 gt²

2 = .5 x 9.8 x t²

t² = .4081

t = .639 s

During this period , the ball will move in horizontal direction uniformly with velocity 40 m /s .

horizontal displacement = horizontal velocity x time

= 40 x .639 = 25.56 m

Answer:

m=w/g

80kg=304/g

g=3.8 m/s^2

Explanation:

Answer:

Acute exposure to the vacuum of space: No, you won't freeze (or explode) ... Upon sudden decompression in vacuum, expansion of air in a person's lungs is likely to cause lung rupture and death unless that air is immediately exhaled.

Explanation:

Answer:

Gravity

Explanation:

After it reaches it's highest point, it falls back down because of gravity.