Ask question

Ask question

All categories

2 years ago

11

______ states that energy cannot be created or destroyed.

2 answers:

Alex2 years ago

7 0

Answer:

c. The law of conservation of energy

Explanation:

The famous "law of conservation of Energy" states that energy inside an isolated system remains conserved. It can not be created and can't be destroyed as well. The energy can only be moved or transformed into another form.

This can be proved using "Noether's Theorem". Classically, only energy was considered conserved but Special Relativity proved that even mass is conserved as it showed the relation between mass and energy.

Pavel [41]2 years ago

4 0

The answer is a newton second law

You might be interested in

Defiance Drake, Space Adventurer, desperately needs to reach a cargo vessel 100m away, or run out of air and die in deep space.

jolli1 [7]

She misses. She should have accelerated faster in order to get to her target.

5 0

2 years ago

A skateboarder, starting from rest, rolls down a 12.8-m ramp. When she arrives at the bottom of the ramp her speed is 8.89 m/s.

melamori03 [73]

Answer:

a) a = 3.09 m/s²

b) aₓ = 2.60 m/s²

Explanation:

a) The magnitude of her acceleration can be calculated using the following equation:

$V_{f}^{2} = V_{0}^{2} + 2ad$

<u>Where</u>:

$V_{f}$ : is the final speed = 8.89 m/s

$V_{0}$ : is the initial speed = 0 (since she starts from rest)

a: is the acceleration

d: is the distance = 12.8 m

$a = \frac{V_{f}^{2}}{2d} = \frac{(8.89 m/s)^{2}}{2*12.8 m} = 3.09 m/s^{2}$

Therefore, the magnitude of her acceleration is 3.09 m/s².

b) The component of her acceleration that is parallel to the ground is given by:

$a_{x} = a*cos(\theta)$

<u>Where</u>:

θ: is the angle respect to the ground = 32.6 °

$a_{x} = 3.09 m/s^{2}*cos(32.6) = 2.60 m/s^{2}$

Hence, the component of her acceleration that is parallel to the ground is 2.60 m/s².

I hope it helps you!

7 0

3 years ago

Pls help I will mark brainliest

irina1246 [14]

B, a disurbance would make it unstable and affect the center of mass, which would then affect the equilibrium.

4 0

2 years ago

Jimmy walks 3 miles east then 1 mile west. What is the distance Jimmy traveled?

AleksAgata [21]

Answer:

2 miles

Explanation:

Jimmy walked forward 3 miles east (to the right)

Then, he backtracked and walked 1 mile west (to the left)

This can be written as:

3 - 1 = ?

3 - 1 = 2

Therefore, Jimmy traveled a total of 2 miles.

4 0

2 years ago

Answer the following question about the attached diagram:

Paladinen [302]

I'm not entirely sure, but I think the first is A, and the second is inverted.

3 0

2 years ago

Read 2 more answers