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
Debora [2.8K]
3 years ago
15

Please help for 21! will mark brainliest

Physics
1 answer:
Katyanochek1 [597]3 years ago
5 0

The answer for this question is D

You might be interested in
A nonconducting sphere contains positive charge distributed uniformly throughout its volume. Which statements about the potentia
just olya [345]
This statement about the potential due to the sphere is correct: THE POTENTIAL IS HIGHEST AT THE CENTER OF THE SPHERE.
The potential is highest at the center of the sphere because, charge usually flow from the region of higher potential to lower potential.
7 0
4 years ago
If you are designing a force multiplying system with two pneumatic cylinders. Your system should increase the force by a multipl
Tomtit [17]

Answer:

decrease the area in the second cylinder

Explanation:

In a two-cylinders pneumatic system, the pressure exerted on the first cylinder is equal to the pressure on the second cylinder:

p_1 = p_2

We can rewrite the pressure as product between force (F) and area (A) of the cylinder:

F_1 A_1 = F_2 A_2

In this system, the output force should be 4 times the input force:

F_2 = 4 F_1

Substituting into the previous equation, we get:

F_1 A_1 = 4 F_1 A_2\\A_2 = \frac{A_1}{4}

This means that the area of the second cylinder must be 1/4 of the area of the first cylinder, so the correct answer is

decrease the area in the second cylinder

8 0
3 years ago
hydroelectric energy is based on the blank energy of water being converted to blank energy as waterfalls and pushes against the
Naddika [18.5K]
This is an example of kinetic to potential because the water is moving, pushing a turbine (Kinetic) and the turbine converts the energy to potential energy.

8 0
3 years ago
Read 2 more answers
In the 2016 Olympics in Rio, after the 50 mm freestyle competition, a problem with the pool was found. In lane 1 there was a gen
gogolik [260]

Answer:

Explanation:

still water speed is 50 m / 25.0 s = 2.00 m/s or 200 cm/s

In lane 1 the effective speed would be 201.2 cm/s

5000 cm / 201.2 cm/s = 24.85 s

The change is 25.00 - 24.85 = 0.15 s decrease in time

In lane 8, the effective speed would be 198.8 cm/s

5000 cm / 198.8 cm/s = 25.15 s

The change is 25.00 - 25.15 = 0.15 s increase in time

6 0
3 years ago
If a 50-kg Person is running at a rate of 2m/s, the person's momentum is _____ kg• m/s.
sergiy2304 [10]

Answer:

100

Explanation:

Use equation p=mv

p=(50kg)(2m/s)= 100

8 0
3 years ago
Other questions:
  • A poundal is the force required to accelerate a mass of 1 lbm at a rate of 1 ft/s2 , and a slug is the mass of an object that wi
    12·1 answer
  • How many hydrogen atoms are found in two molecules of hydroxylamine, 2NH2OH?
    11·2 answers
  • a teacher pushed a 10kg desk across a floor for a distance of 5m. she exerted a horizontal force of 20n. how much work was done?
    6·1 answer
  • One
    8·1 answer
  • What is a force that does not involve physical contact between two objects?
    13·2 answers
  • A free-falling golf ball strikes the ground and exerts a force on it
    11·1 answer
  • A metal block suspended from a spring balance is submerged in water. You observe that the block displaces 55 cm3 of water and th
    7·1 answer
  • Representation in the House is based on<br>A. equality between states<br><br>B. a state's population
    15·1 answer
  • A ball is rolled along the inside of a partial hoop lying flat on a table. which path will the ball follow when it gets to the e
    10·2 answers
  • 15 Points , Physics HW, can someone please show me step by step how to calculate percent difference for this problem. My numbers
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!