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Nezavi [6.7K]
3 years ago
13

An object that is accelerating may be

Physics
1 answer:
pickupchik [31]3 years ago
8 0
The answer of this question is D. All of the above

Acceleration happen when an obeject change its velocity. It has nothing to do with speed.

The huge misconception about acceleration is when we thought it only aply if we increase our speed ( in a sport match, sportcaster often describe acceleration as an increase in players speed)

slower, faster, right , left, it does not matter, as long as that object change its velocity, it accelerates
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A light body and a heavy body have the
Elena-2011 [213]

Answer:

The heavy body

Explanation:

The heavy body because it's heavier and the heavier something is the more kinetic energy it has.

Pretty sure this is correct

Hope it helps

7 0
3 years ago
Read 2 more answers
A skier starts from rest at the top of a hill that is inclined 10.5° with respect to the horizontal. The hillside is 200 m long,
Svetlanka [38]

Answer:

d) 289.31 m

Explanation:

Energy provided by potential energy = mgh = m x 9.8x 200 sin10.5 = 357.18m

Energy used by friction = μmgcos 10.5 x 200 = .075 x m x 9.8 x cos 10.5 x200 = 144.54 m .

Energy used by friction on plain surface = μmg x d.( dis distance covered on plain ) =.075x m x 9.8 xd = .735 m d

To equate

357.18 m -144.54 m = .735 m d

d = 289.31 m .

4 0
3 years ago
What are examples of conversion of energy?
Pepsi [2]
A toaster draws electric current ( electrical energy) from a wall outlet and converts these moving electric charges into heat (thermal energy) in the filaments that turn red hot to cook your toast. I hope that helps you
3 0
3 years ago
1) what is the potential energy at the end of the loop?
AlexFokin [52]

The potential energy at the end of the loop is equal to 0.3407 Joules.

<u>Given the following data:</u>

  • Mass of rock = 102.16 g to kg = 0.10216 kilogram.
  • Height of the loop = 34 cm to m = 0.34 meter.
  • Acceleration due to gravity = 9.8 m/s^2

<h3>What is potential energy?</h3>

Potential energy (P.E) refers to the energy that is possessed by an object due to its position (height) above planet Earth.

Mathematically, potential energy (P.E) is given by this formula;

P.E = mgh

<u>Where:</u>

  • m is the mass of an object.
  • g is the acceleration due to gravity.
  • h is the height of an object.

Substituting the given parameters into the formula, we have;

P.E = 0.10216 \times 9.81 \times 0.34

P.E = 0.3407 Joules.

<h3>What is kinetic energy?</h3>

Kinetic energy (K.E) refers to an energy that is possessed by a physical object due to its motion.

Mathematically, kinetic energy (K.E) is given by this formula;

K.E = \frac{1}{2} MV^2

<u>Note:</u> You'll have to calculate the velocity from the distance traveled by the car and photogate time in your experiment.

Based on the law of conservation of energy, we can deduce the following points:

  • Potential energy (P.E) is <u>highest</u> at the top of the loop while kinetic energy (K.E) is <u>lowest</u>.
  • Kinetic energy (K.E) is <u>highest</u> underneath the loop while potential energy (P.E) is <u>lowest</u>.

Read more on potential energy here: brainly.com/question/8664733

6 0
3 years ago
Communication with submerged submarines via radio waves is difficult because seawater is conductive and absorbs electromagnetic
REY [17]

Answer:

\lambda=4000\ km

Explanation:

It is given that,

Frequency for submarine communications, f = 76 Hz

We need to find the wavelength of those extremely low-frequency waves. the relation between the wavelength and the frequency is given by :

c=f\times \lambda

\lambda=\dfrac{c}{f}

\lambda=\dfrac{3\times 10^8\ m/s}{76\ Hz}

\lambda=3947368.42\ m

\lambda=3947\ km

or

\lambda=4000\ km

So, the wavelength of those extremely low-frequency waves is 4000 km. Hence, this is the required solution.

4 0
3 years ago
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