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
Mrac [35]
3 years ago
7

A gust of wind pushes a beach ball with a force of 9 newtons. the ball rolls 10 meters in 3 seconds. what is the power of the wi

nd?

Physics
2 answers:
guajiro [1.7K]3 years ago
6 0
P = W/t

P power
W work
t Time

MAXImum [283]3 years ago
3 0

Answer:

30 Watts

Explanation:

Power is given by the formula P = W / t; where P is power, W is work, and t is time.

Work is given by the formula W = F x d; where F is the force, and d is the distance traveled.

Since we do not know the amount of work done, we have to calculate it:

W = F x d

W = (9 N) x (10 m)

W = 90 Nm  (The unit for work is Newton-meters)

We now have the value for work, so we can calculate power:

P = W / t

P = (90 Nm) / (3 s)

P = 30 W  (The unit for power is Watts)

You might be interested in
If a 2 cm vector represents speed, and 1 cm equals 5 m/s, how fast is the represented
Ne4ueva [31]

Answer: 10m/s

Explanation: Since a single vector with length of 1cm expresses 5m/s, the vector which has a length doubled from the original vector should have the speed which is also doubled.

6 0
3 years ago
Sound waves that enter the ear canal are directed to the ____, causing it to vibrate.
andre [41]

According to the research, the correct option the eardrum. Sound waves that enter the ear canal are directed to the <u>eardrum</u>, causing it to vibrate.

<h3>What is the eardrum?</h3>

It is the membrane found in the middle ear of vertebrate animals, separating this sector from the external auditory canal.

When sound waves enter through the external auditory canal, the eardrum vibrates, transmitting its movement to the middle ear through a series of bones and in this way, the pressure change is transformed into a mechanical movement.

Therefore, we can conclude that according to the research, the correct option is the eardrum. Sound waves that enter the ear canal are directed to the <u>eardrum</u>, causing it to vibrate.

Learn more about the eardrum here: brainly.com/question/12770491

#SPJ1

4 0
2 years ago
5. average A body sets off from rest with a constant acceleration of 8.0 m/s? What distance will it have covered after 3.0 s? 6.
chubhunter [2.5K]

Answer:

\boxed {\boxed {\sf 36 \ meters}}

Explanation:

We are asked to find the distance a body covers. We know the initial velocity, acceleration, and time, so we will use the following kinematic equation.

d= v_i t+ \frac {1}{2} \ at^2

The body starts at rest with an initial velocity of 0 meters per second. The acceleration is 8 meters per second squared. The time is 3.0 seconds.

  • v_i= 0 m/s
  • a= 8 m/s²
  • t= 3 s

Substitute the values into the formula.

d= (0 \ m/s)(3 \ s) + \frac{1}{2} (8 \ m/s^2)(3 \ s)^2

Multiply the first set of parentheses.

d= ( 0 \ m/s * 3 \ s) + \frac{1}{2} ( 8 \ m/s^2)(3 \ s)^2

d=0 \ m + \frac{1}{2} ( 8 \ m/s^2)(3 \ s)^2

Solve the exponent.

  • (3 s)²= 3 s* 3 s= 9 s²

d= 0 \ m + \frac{1}{2}( 8 \ m/s^2)(9 \ s^2)

Multiply again.

d= 0 \ m + \frac{1}{2} ( 72  \ m)

d= 36 \ m

The body will cover a distance of <u>36 meters</u>.

5 0
2 years ago
An object is pulled along the ground by exerting a force of 35 pounds a rope that makes a 10° angle with the ground. How much wo
GREYUIT [131]
<h2>Answer:</h2>

Workdone = 601.33 Nm

<h2>Explanation:</h2>

Workdone = Force(F) x horizontal distance(d).

Wordone = F x d

Where F is the horizontal component of the force

Force = 35 pounds

Recall that;

1 pound force = 4.4N

=> 35 pounds = 35 x 4.4N = 154N

=> Force = 154N

But since the rope makes a 10⁰ angle with the ground,

The horizontal component of the force F is  Force x  cos10⁰

=> F = 154 cos 10⁰

=> F = 154 x 0.9848

=> F = 151.66N

Horizontal distance (d) = 13 feet

Recall that;

1 foot = 0.305m

=> 13 feet = 13 x 0.305m = 3.965m

=> d = 3.965m

=> Substituting the values of F and d into the equation above, we have;

Workdone = F x d

Workdone = 151.66N x 3.965m

Workdone = 601.33Nm

8 0
3 years ago
A rectangular loop of wire carries current I in the clockwise direction. The loop is in a uniform magnetic field B that is paral
Eva8 [605]

Answer:

Explanation:

Area of the loop = a b

current = I

magnetic moment of the loop M  = area x current

= ab I

Torque on the loop = MB sinθ

here θ = 90

Torque = MB

= abIB

In this case net force on the loop will be zero because here torque is created by two equal and opposite force acting on two opposite sides of the loop so net force will be zero .

3 0
3 years ago
Other questions:
  • It is known that the kinetics of recrystallization for some alloy obeys the Avrami equation, andthat the value of n in the expon
    5·1 answer
  • Your sister has been taking her friend's ADHD medication. She is struggling with trying to quit using the medication and asks yo
    6·2 answers
  • A goose waddles 18.0 m north and then 5.00 m east. He then walks 2.00 m south and 2.00 m west. What is the magnitude and directi
    10·1 answer
  • A 5000-km long cable consists of seven copper wires, each of diameter 0.85 mm, bundled together and surrounded by an insulating
    10·1 answer
  • 7. A toy car of mass 1.2 kg is driving vertical circles inside a hollow cylinder of radius 2.0m. It is moving at a constant spee
    8·1 answer
  • The ________ is located inside the outdoor condenser unit and receives the low-pressure refrigerant vapor through the suction li
    8·1 answer
  • Hen Mount St. Helen's erupted in 1980, it sent volcanic ash 18 kilometers into Earth's atmosphere. Which portions of Earth's atm
    12·1 answer
  • Solar panels generate electricity using photovoltaic cells that receive sunlight. to protect these cells from moisture while all
    11·2 answers
  • Much of the pollution in out oceans comes from:
    12·1 answer
  • Which is not an example of a scalar?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!