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
7nadin3 [17]
3 years ago
12

(answer fast and correctly and i will give you brainiest and 5 star's. )

Physics
2 answers:
oee [108]3 years ago
7 0

Answer:

Energy cannot be created or destroyed.

Explanation:

its in the name, law of "conservation" of energy. energy can only change forms not be destroyed

sattari [20]3 years ago
5 0

Answer: Energy cannot be created or destroyed.

Explanation: The law of conservation of energy states that energy can neither be created nor be destroyed due to energy loss. It can only change its states from one energy state to another.

The efficiency is defined as the ratio of output work to the input work. The efficiency of the fan is not 100%. Because some of the energy is lost in the form of heat and sound. No machine is 100% efficient. There is always some loss of energy takes place.

I really hope this helps and sorry it's late.

You might be interested in
What does the octect rule state that explains why atoms bond ?
Simora [160]

Answer:

Explanation:

Atoms naturally bond with each other in an attempt to have 8 or zero valence electrons. This occurs in salts, covalent bonds, and mettalic bonds. This is how the octet rule demonstrates why atoms bond.

Hope this helps!

8 0
3 years ago
What can we say about a polarizing filter with vertically aligned chemical molecules?
klemol [59]

Answer:

A . It will allow vertically polarized light to pass through it.

Explanation:

Polarization is the attribute in which waves oscillate in a particular direction relative to the direction of travel. The direction of polarization determines the type of polarized light produced. Since the chemical molecules are vertically aligned, it will only allow vertically polarized light pass through it.

3 0
4 years ago
A 92kg astronaut and a 1200kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving
Harman [31]

Answer:

13.7m

Explanation:

Since there's no external force acting on the astronaut or the satellite, the momentum must be conserved before and after the push. Since both are at rest before, momentum is 0.

After the push

m_av_a + m_sv_s = 0

Where m_a = 92kg is the mass of the astronaut, m_s = 1200kg is the mass of the satellite, v_s = 0.14 m/s is the speed of the satellite. We can calculate the speed v_a of the astronaut:

v_a = \frac{-m_sv_s}{m_a} = \frac{-1200*0.14}{92} = -1.83 m/s

So the astronaut has a opposite direction with the satellite motion, which is further away from the shuttle. Since it takes 7.5 s for the astronaut to make contact with the shuttle, the distance would be

d = vt = 1.83 * 7.5 = 13.7 m

4 0
3 years ago
What is the magnification of a real image if the image is 15.0 cm from a lens and the object is 60.0 cm from the lens?
Hoochie [10]

Answer:

soluble

Explanation:

7 0
3 years ago
Read 2 more answers
I'd: 9872093250, password: qqqqq ,join the meeting​
kirill115 [55]
Sheeeeeeeeeeeeeeeeeeeeeesh
4 0
3 years ago
Other questions:
  • Which factor affects the force of gravity between objects? Select two options.
    7·2 answers
  • Someone please help my universe revision!!
    14·1 answer
  • What happens when a charged object is brought close to a neutral object?
    9·1 answer
  • How many grams of NO2 are in 3 moles of a nitrogen dioxide???<br>90.2g<br>138.2g<br>160g<br>0.07g​
    14·1 answer
  • A 0.20 kg particle moves along the x axis under the influence of a stationary object. The potential energy is given by U(x) = 8x
    13·1 answer
  • Explain how air pollution impacts each of Earth's systems.
    14·1 answer
  • The zinc plate is coated with mercury ​
    10·1 answer
  • What type of stimulus do we tend to be particularly aware of ?
    10·1 answer
  • A bomber is flying at a height of 3.1 km at a speed of 829 km/hr. How far in front of the target should he
    6·1 answer
  • Why is the moon’s force of gravity less than that of the earth?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!