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
yuradex [85]
3 years ago
6

PLEASE HELP ASAP!!!

Physics
1 answer:
musickatia [10]3 years ago
5 0

Answer:

22.2 W

Explanation:

First of all, we calculate the work done by moving the wagon, using the formula:

W=Fdcos \theta

where

F = 20 N is the magnitude of the force

d = 1000 m is the displacement of the wagon

\theta=0^{\circ} is the angle between the direction of the force and of the displacement (assuming the force is applied in the direction of motion)

Substituting, we find

W=(20)(1000)=20,000 J

Now we can find the power generated, which is equal to the ratio between the work done and the time taken:

P=\frac{W}{t}

where

W = 20,000 J

t = 15 min = 900 s

Substituting,

P=\frac{20000}{900}=22.2 W

And the same value in Joules/second (remember that 1 Watt = 1 Joule/second)

You might be interested in
How often a wave occurs in the waves
Jlenok [28]

Answer:

Frequency – The frequency of a wave is the number of waves that pass a given point in a certain amount of time. Frequency is measured in units called hertz (Hz), and is defined as the number of waves per second. A wave that occurs every second has a frequency of 1 wave per second (1/s) or 1 Hz.

3 0
2 years ago
In order to control bacterial infections and/or food poisoning, the FDA (Food and Drug Administration) has approved the use of n
Lelechka [254]

The answer is food irradiation. This involves the brief exposure of food to gamma rays or X-rays to kill pathogens that may contribute to food spoilage. This increases the shelf-life of the food. Gamma rays and X-rays emanate from nuclear decay of radioactive materials such as uranium..

4 0
3 years ago
Read 2 more answers
Which sentence is true about Polaris and the Sun?
Andrei [34K]
Its B polaris seems smaller than the Sun
3 0
3 years ago
Read 2 more answers
The experimenter fom the video rotates on his stool, this time holding his empty hands in his lap. You stand on a desk above him
gtnhenbr [62]

Answer:

Explanation:

The experimenter is rotating on his stool with angular velocity ω ( suppose )

His moment of inertia is I say

We are applying no torque from outside . therefore , the angular momentum will remain the same

Thus angular momentum L = I ω = constant

Thus we can say I₁ ω₁ = I₂ω₂ = constant

here I₁ is the initial moment of inertia and ω₁ is the initial angular velocity

Similarly I₂ is the final moment of inertia and ω₂ is the final angular velocity

When a been bag is dropped on his lap , his moment of inertia increases due to increase in mass

In the above equation, when moment of inertia increases , the angular velocity decreases . So its motion of rotation will decrease .

7 0
2 years ago
What is the current in a circuit that has a resistance of 30 ohms and a power of 2 watts
mamaluj [8]

Answer:

0.2581 Ampere

Explanation:

0.2581 Ampere is the current in a circuit that has a resistance of 30 ohms and a power of 2 watts.

8 0
3 years ago
Other questions:
  • Which best describes the definition for the atomic mass of an element
    9·2 answers
  • A real object with height of 3.20 cm is placed to the left of a converging lens whose focal length is 90cm. The image is on the
    13·1 answer
  • An object weighs 39.36 newtons. What is its mass if a gravitometer indicates that g = 9.83 m/s2?
    9·2 answers
  • field lines point out from all sides on a object. Some of the lines point into a second object nearby. Which statement best desc
    7·1 answer
  • There are two ways that an object can get in motion. What are they?You may use the following sentence frame:An object can get in
    8·2 answers
  • How much heat is required to heat 0.1 g of ∆hvap =2260 j/g ∆h =340j/g fus iceat−30ctosteamat100c? use the approximate values?
    10·1 answer
  • A material that breaks down quickly in the environment is called??
    6·2 answers
  • .In a bizarre but harmless accident, Superman fell from the top of the Eiffel Tower. How fast was Superman traveling when he hit
    13·1 answer
  • What role does the sun play in driving the water cycle in Antarctica
    6·1 answer
  • Rosa pours a cup of boiling water into a pot of room-temperature water. According to the second law of thermodynamics, what will
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!