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
Serjik [45]
3 years ago
7

A. 25% B. 20% C. 10% D. 80% please show work :)

Physics
1 answer:
Setler79 [48]3 years ago
4 0

Substitute your values into the formula:

W = Work done = 288

Q_{in} = 360

Solve to find e:

e = 288 ÷ 360 = 0.8

Convert e to a percentage by multiplying by 100.

0.8 × 100 = 80

<h2>D. 80%</h2>
You might be interested in
An 80 kg skateboarder moving at 3 m/s pushes off with her back foot to move faster.
Dmitry [639]

Answer:

640 J

640 J

Explanation:

ΔKE = ½ mv² − ½ mu²

ΔKE = ½ m (v² − u²)

ΔKE = ½ (80 kg) ((5 m/s)² − (3 m/s)²)

ΔKE = 640 J

Work = ΔE

Work = 640 J

5 0
4 years ago
Read 2 more answers
What is the initial velocity of the object represented by the graph?
Arturiano [62]

Initial velocity of the object: 5 m/s

Explanation:

The figure in the problem is missing: find it in attachment.

The graph in the figure represents the velocity of an object (v) versus the time passed (t).

Here we are asked to find the initial velocity of the object.

This means that we have to find the velocity of the object when the time is zero, so when

t = 0

By looking at the corresponding value on the y-axis (velocity), we see that when t = 0, then

v = 5 m/s

Therefore, the initial velocity of the object is 5 m/s.

Learn more about velocity:

brainly.com/question/5248528

#LearnwithBrainly

5 0
3 years ago
Read 2 more answers
Calculate the potential difference of a wire of 10 ohm , through which 5 A of current is flowing .
HACTEHA [7]
Resistance= Potential Difference/Current
10 Ohm= PD/ 5A
PD= 10 Ohm × 5A
PD=50
Therefore, Potential Difference is B. 50 V
5 0
3 years ago
How long will a radioactive isotope decay?
fiasKO [112]

Answer:

c - until it becomes a different, stable element

Explanation:

found it somewhere else than brainly you're welcome :)

8 0
4 years ago
Read 2 more answers
What are some objects in your home that demonstrate electrical energy to radiant energy to thermal energy
photoshop1234 [79]
A plug in space heater maybe
4 0
3 years ago
Other questions:
  • What is the center of a tornado called A.the eye B. The center C. The middle road D. The vortex
    13·2 answers
  • A child on a playground swing makes a complete to-and-fro swing each two seconds. the frequency of the swing is
    7·1 answer
  • The mass, hanging over the pulley, is representative of the centrifugal force acting on the three-hooked mass while it is rotati
    8·1 answer
  • A 2.10 kg textbook rests on a frictionless, horizontal surface. A cord attached to the book passes over a pulley whose diameter
    9·1 answer
  • Which combination of units expresses volume?<br> m?, cm², km?<br> m, cm, km<br> Om?cm. km
    7·2 answers
  • Lesson 8 Exit Ticket
    11·1 answer
  • What is the Coulomb's Law?
    14·1 answer
  • Water is completely filling black metallic vessel having cubic form and thin walls. The mass of water is 1 kg and initial temper
    7·1 answer
  • A 2 kg object is
    13·1 answer
  • A uniform soda can of mass 0.140 kg is 12.0 cm tall and filled with 0.354 kg of soda (Fig. 9-41). Then small holes are drilled i
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!