1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sedaia [141]
3 years ago
13

Will upvote!!!!

Physics
2 answers:
Aloiza [94]3 years ago
7 0

Potential Energy is correct. I took the test

juin [17]3 years ago
4 0
D. potential energy, because there is a bunch of water pent up, essentially stationary, waiting to roll down the steep mountain from the peak, so to say. if the dam were to be removed it would become kinetic.
You might be interested in
You launch a water balloon from the ground with a speed of 8.3 m/s at an angle of 27°. a. What is the horizontal component of th
solmaris [256]

a) The horizontal component of the velocity is 7.4 m/s

b) The vertical component of the velocity is 3.8 m/s

c) The balloon reaches the highest point after 0.39 s

d) The maximum height is 0.74 m

e) The total time of flight is 0.78 s

f) The range of the balloon is 5.77 m

Explanation:

a)

The motion of the balloon is the motion of a projectile, which consists of two independent motions:

- A uniform motion (constant velocity) along the horizontal direction

- An accelerated motion with constant acceleration (acceleration of gravity) in the vertical direction

The horizontal component of the velocity (which is constant) is given by

v_x = u cos \theta

where

u = 8.3 m/s is the initial velocity of the balloon

\theta=27^{\circ} is the angle of projection

Substituting,

v_x = (8.3)(cos 27^{\circ})=7.4 m/s

b)

The vertical component of the initial velocity of a projectile is given by

u_y = u sin \theta

where

u is the initial velocity

\theta is the angle of projection

Here we have

u = 8.3 m/s

\theta=27^{\circ}

Substituting,

u_y = (8.3)(sin 27^{\circ})=3.8 m/s

c)

The vertical component of the velocity of the balloon follows the suvat equation

v_y = u_y - gt

where

v_y is the vertical velocity at time t

u_y = 3.8 m/s is the initial vertical velocity

g=9.8 m/s^2 is the acceleration of gravity

The balloon reaches the maximum height when the vertical velocity becomes zero:

v_y = 0

So we get:

0=u_y -gt\\t=\frac{u_y}{g}=\frac{3.8}{9.8}=0.39 s

d)

The maximum height of the balloon can be calculated using the suvat equation:

s=u_y t - \frac{1}{2}gt^2

where

u_y = 3.8 m/s is the initial vertical velocity

g=9.8 m/s^2 is the acceleration of gravity

t = 0.39 s is the time at which the highest point is reached

Substituting,

s=(3.8)(0.39)-\frac{1}{2}(9.8)(0.39)^2=0.74 m

e)

The total time of flight of a projectile is twice the time needed to reach the maximum height, and it is given by

t=\frac{2u_y}{g}

where

u_y is the initial vertical velocity

g is the acceleration of gravity

Here we have

u_y = 3.8 m/s

g=9.8 m/s^2

Substituting,

t=\frac{2(3.8)}{9.8}=0.78 s

f)

The range of a projectile is the horizontal distance covered by the projectile, so it can be found by multiplying its horizontal velocity (which is constant) by the time of flight:

d=v_x t

where

v_x is the horizontal velocity

t is the time of flight

Here we have

v_x = 7.4 m/s

t = 0.78 s

Substituting,

d=(7.4)(0.78)=5.77 m

Learn more about projectile motion:

brainly.com/question/8751410

#LearnwithBrainly

7 0
3 years ago
In which medium does sound travel faster
9966 [12]

It travels fastest through solids.

5 0
3 years ago
Read 2 more answers
By what percent does the braking distance of a car decrease, when the speed of the car is reduced by 10.3 percent? Braking dista
likoan [24]

The braking distance is the distance traveled by a car experiencing a braking force until it comes to rest.

Our initial energy is solely kinetic:
E_i = \frac{1}{2}mv^2

And, since the car goes to rest, it is no longer in motion. It will have no kinetic energy.
E_f = 0

Therefore, there was work done by the braking force.

W_B = E_f - E_i = -\frac{1}{2}mv^2

Recall the definition of work:
W = F\cdot \Delta x

Or in this case, since the displacement and breaking force are antiparallel:
W = -F_B\Delta x

This is equivalent to the dissipation of kinetic energy:
W = -F_B\Delta x = -\frac{1}{2}mv^2

Now, to visualize this, let's rearrange the equation to solve for displacement.

\Delta x =\frac{mv^2}{2F_B}

<u>There is a direct, SQUARE relationship between necessary braking distance speed. </u>

If the speed was reduced by 10.3 percent, its new speed is only 89.7% percent of the original, so:
\Delta x' =\frac{m(0.897v)^2}{2F_B}

\Delta x' = 0.8046\Delta x

The reduction by a percentage is:
1 - 0.8046 = 0.1954 \\\\\boxed{= 19.54\%}

6 0
1 year ago
Please select the word from the list that best fits the definition
lianna [129]

Answer: No list

Explanation:

7 0
3 years ago
Read 2 more answers
Which part of the larynx is the opening between the vocal folds where vibration occurs?
Lynna [10]

Glottis I believe is the answer.

5 0
3 years ago
Other questions:
  • A 0.1 kg bouncy ball moves toward a brick wall with a speed of 11 m/s. After colliding with the wall, the ball travels at a spee
    7·1 answer
  • A circular section of 25 mm diameter is welded (all the way around) to a wall and subject to a torsional load. Calculate the uni
    15·1 answer
  • Calculate the moment of inertia and the rotational kinetic energy for the following objects spinning about a central axis (in un
    7·1 answer
  • Fruit and write your thought about it​
    6·1 answer
  • Can I have some help
    14·1 answer
  • A boy is playing with a water hose, which has an exit area of
    6·1 answer
  • When dropping a grape and a bowling ball from a height, the force of gravity would be identical on each object. True or False
    9·2 answers
  • Give the names of two animals which reproduce sexually​
    9·1 answer
  • An electron moves in a circular path in a region os space filled with a uniform magnetic field B= 0.4 T. to double the radius of
    6·1 answer
  • The magnitude of the force associated with the gravitational field is constant and has a value f. A particle is launched from po
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!