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
k0ka [10]
3 years ago
10

Which of the following is NOT true about energy conversion devices?

Physics
1 answer:
konstantin123 [22]3 years ago
5 0

Answer:

D

Explanation:

Option A, B and C are true about energy conversion devices, only option D is NOT true about energy conversion devices.

You might be interested in
You just found a metallic object in a creek bed. you have found its mass to be 96.5 g, and it displaces 5mL of water. what is th
MaRussiya [10]
Judging by the density (19.3 g/ml) there's a very good chance that it could be gold.
4 0
3 years ago
Read 2 more answers
How does the "human" part of human resources influence how companies need to treat these resources?
kap26 [50]

A. Companies should consider that people will learn more and become more valuable over time.

<h3>Importance of human resources</h3>

human resources provide the organization with a clear vision of competitive advantage and contribute affectively to the organizational success in general.

Human resources also ensure employee satisfaction.

Thu, "human" part of human resources influence how companies need to treat these resources by ensuring that companies consider that people will learn more and become more valuable over time.

Learn more about human resources here: brainly.com/question/10583893

#SPJ1

8 0
2 years ago
A ball of mass 4.5 kg moving with speed of 2.2 m/s in the +x-direction hits a wall and bounces back with the same speed in the x
Levart [38]

Answer:

The change of the momentum of the ball is -19.8\, \frac{mkg}{s}

Explanation:

We should find \varDelta\overrightarrow{p}=\overrightarrow{p_{f}}-\overrightarrow{p_{i}} (1)with \overrightarrow{p_{i}} the initial momentum and \overrightarrow{p_{f}} the final momentum. Linear momentum is defined as \overrightarrow{p}=m\overrightarrow{v}, using that on (1):

\varDelta\overrightarrow{p}=m \overrightarrow{v_{f}}-m \overrightarrow{v_{i}} (2)

It's important to note that momentum and velocity are vectors and direction matters, so if +x direction is the direction towards the wall and the -x direction away the wall \overrightarrow{v_{i}}=+2.2\, \frac{m}{s} and \overrightarrow{v_{f}}=-2.2\, \frac{m}{s} so (2) becomes:

\varDelta\overrightarrow{p}=m(-2.2- (+2.2))=-(4.5)(4.4)

\varDelta\overrightarrow{p}=-19.8\, \frac{mkg}{s}

8 0
3 years ago
The 60.0 kg skier shown below is skiing down a 35.0 degree incline where the magnitude of the friction force is 38.5N
Sunny_sXe [5.5K]

Answer:

a) 4.98m/s²

b) 481.66N

Explanation:

a) Using the Newtons second law of motion

\sum F_x = ma_x\\F_m - F_f = ma_x\\Wsin \theta - F_f = ma_x\\mgsin \theta - F_f = ma_x\\

m is the mass of the object

g is the acceleration due to gravity

Fm is the moving force acting along the plane

Ff is the frictional force opposing the moving froce

a is the acceleration of the skier

Given

m = 60kg

g = 9.8m/s²

\theta = 35°

Ff = 38.5N

Required

acceleration of the skier a

Substituting into the formula;

60(9.8)sin 35^0 - 38.5 = 60a\\588sin35^0 - 38.5 = 60a\\337.26 - 38.5 = 60a\\298.76 = 60a\\a = 298.76/60\\a = 4.98m/s^2\\

Hence the acceleration of the skier is 4.98m/s²

b) The normal force on the skier is expressed as;

N = Wcosθ

N = mgcosθ

N = 60(9.8)cos 35°

N = 588cos 35°

N = 481.66N

Hence the normal force on the skier is 481.66N

5 0
3 years ago
1. Vector B is multiplied by the scalar 921.5. What angle does the new vector make with the x-axis?
adelina 88 [10]
1. Is 49.5
2. Is 8.6
4. Is 6.6
Wait I’m not sure
6 0
3 years ago
Read 2 more answers
Other questions:
  • You are moving into an apartment and take the elevator to the 6th floor. Suppose your weight is 790 N and that of your belonging
    12·1 answer
  • What is the volume of a box with sides that measures 10 cm , 10 cm, 30 cm
    5·2 answers
  • A can of spray paint is trapped Inside a hot car. The can breaks explain why?
    12·2 answers
  • Please help me answer this question! Will appreciate help very much. a) Draw a circuit to show 3 lights in series b) Draw a circ
    7·1 answer
  • Suppose you wind a wire with a current into a coil. How have you changed the wire’s magnetic field?
    8·1 answer
  • Difference between relating velocity and angular velocity?​
    8·1 answer
  • Formula for calculating work done in machines ​
    13·1 answer
  • Because insects are living and moving, what investigator's challenges in collecting insect evidence?
    13·1 answer
  • A 1.5 kg baseball is pitched at 38 m/s and is hit by the batter. It heads directly back at the pitcher at 27 m/s.
    15·1 answer
  • What is displacement?​
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!