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
Darina [25.2K]
3 years ago
8

Show by dimension that the equation of motion is correct V² = U²+2as​

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

Answer:

i think its 56as

Explanation:

You might be interested in
If the _____ work on a simple machine equals the output work, the machine is said to be 100% efficient.
omeli [17]
<h3>Answer:</h3>

Input work

<h3>Explanation:</h3>

Concept being tested: Efficiency of machines

Therefore we need to know what is the efficiency of a machine

  • Efficiency of a machine is the ratio of work output of machine to the work input expressed as a percentage.
  • Thus;

Efficiency = (Work output ÷ Work input) × 100%

  • Therefore, if the work input is equal to the work output then the efficiency of the machine will be 100%.
  • Most machines are not 100% efficient due to loss of energy in form of heat due to friction of the moving parts of the machine.
3 0
3 years ago
What is the most abundant element in the universe?<br> A. helium<br> B. hydrogen<br> C. carbon
Naya [18.7K]
The answer is Carbon
3 0
3 years ago
Read 2 more answers
A wheel at rest gains an angular momentum of 10.7kgm²/s in 8s. if the moment if inertia of the wheel is 2.2kgm², how many revolu
EleoNora [17]

Answer:

Revolutions made before attaining angular velocity of 30 rad/s:

θ = 3.92 revolutions

Explanation:

Given that:

L(final) = 10.7 kgm²/s

L(initial) = 0

time = 8s

<h3>Find Torque:</h3>

Torque is the rate of change of angular momentum:

T = \frac{L(final)-L(initial)}{t}\\T = \frac{10.7-0}{8}\\T=1.34 Nm

<h3>Find Angular Acceleration:</h3>

We know that

T = Iα

α = T/I

where I = moment of inertia = 2.2kgm²

α = 1.34/2.2

α = 0.61 rad/s²

<h3>Find Time 't'</h3>

We know that angular equation of motion is:

ω²(final) = ω²(initial) +2αθ

(30 rad/s)² = 0 + 2(0.61 rad/s²)θ

θ = (30 rad/s)²/ 2(0.61 rad/s²)

θ = 24.6 radians

Convert it into revolutions:

θ = 24.6/ 2π

θ = 3.92 revolutions

3 0
3 years ago
Please helppppppppppppp
sergejj [24]

Answer:

First 8 if wrong then correct me. Second it's direction correct me if wrong.

Explanation:

8 0
2 years ago
Which statement is not correct for lamps connected in parallel
ycow [4]

Answer:

This question is not complete but the completed question is below

Which statement is not correct for lamps connected in parallel?

A They can be switched on and off separately.

B They will remain bright if another lamp is connected in parallel.

C They share the supply voltage equally between them.

D They still operate if one lamp is removed.

The correct option is A

Explanation:

Lamps connected in series have the same voltage running across each lamp in the connection and will thus have the same brightness if any lamp is added or removed. This property also means they can only be switched on and off by a single switch, hence option A is not correct about lamps connected in parallel.

6 0
3 years ago
Other questions:
  • You are pulling a child in a wagon. The rope handle is inclined upward at a 60∘ angle. The tension in the handle is 20 N.How muc
    7·1 answer
  • A change in position of an object relating to time
    9·2 answers
  • Ions can have a positive or negative charge. Please select the best answer from the choices provided T F
    8·1 answer
  • All objects emit radiation as a result of
    6·1 answer
  • Two blocks collide on a frictionless surface. After the collision, the blocks sticktogether. Block A has a mass M and is initial
    11·1 answer
  • Help me with this question plz
    14·2 answers
  • Two ice skaters suddenly push off against one another starting from a stationary position. The 45-kg skater acquires a speed of
    12·1 answer
  • What is <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B4%7D%20%3D%20%20%5Cfrac%7B%3F%7D%7B8%7D%20" id="TexFormula1" t
    13·2 answers
  • <img src="https://tex.z-dn.net/?f=what%20%5C%3A%20is%20%5C%3A%20the%20%5C%3A%20formula%20%5C%3A%20of%20%5C%3A%20pressure%20%5C%3
    13·2 answers
  • How can food help an organism to maintain cells and grow?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!