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3 years ago

One of the characteristic of sound enogy Similarto light energy is?

Physics

1 answer:

Nastasia [14]3 years ago

6 0

Answer:

They both produce heat energy.

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A drag racer starts from rest and accelerates at 10 m/s squared for the

nika2105 [10]

Answer:

54 $\frac{m}{s}$

Explanation:

$v=u+at$

where $u=$ initial velocity

$v=0+(10\frac{m}{s^{2} } )$ × $(5.4s)$

$v=54\frac{m}{s}$

6 0

3 years ago

If an athlete leaps vertically at 4.0m/s, what maximum height does he reach?

joja [24]

Hello
This is a problem of accelerated motion, where the acceleration involved is the gravitational acceleration: $g=-9.81~m/s^2$ , and where the negative sign means it points downwards, against the direction of the motion.

Therefore, we can use the following formula to solve the problem:
$v_f^2 = v_i^2 + 2gS$
where $v_i=4~m/s$ is the initial vertical velocity of the athlete, $v_f=0$ is the vertical velocity of the athlete at the maximum height (and $v_f=0~m/s$ at maximum height of an accelerated motion) and S is the distance covered between the initial and final moment (i.e., it is the maximum height). Re-arranging the equation, we get
$S= \frac{v_f^2-v_i^2}{2g}=0.82~m$

3 0

3 years ago

QUESTION 1 If you do 1,000 J of work on a system and remove 500 J of heat from it, what is the change in its internal energy?

Mazyrski [523]

1. U = Q + W
U = -500 + 1000
U = 500 J

2. The first law of thermodynamic is about the law of conservation of energy where energy in should be equal to energy out.

3. It is the windmill that does not transform energy from heat to mechanical instead it is the transforms the opposite.

4. In a heat engine, work is used to transfer thermal energy from a hot reservoir to a cold one.

5. 5.00 × 10^4 J - 2.00 × 10^4 J = 3.00 × 10^4 J

6. To increase the work done, we raise the temperature of the cold reservoir.

7 0

3 years ago

Read 2 more answers

If energy decreases in one part of a system, what will happen?

Flauer [41]

C. because energy can not be created or destroyed, but transformed/transferred to maintain equilibrium.

6 0

4 years ago

The blood pressure of a<br>person is 140/100 mm of Hg, what does it mean?

KonstantinChe [14]

Answer:

If the blood pressure of a person is more than 120/80 mm of Hg, then it is especially called as high blood pressure.

Explanation:

But regarding answer to this question, The blood pressure of a

person is 140/100 mm of Hg means that the systolic blood pressure of a person is 140 mm of Hg and diastolic blood pressure of a person is 100 mm of Hg.

I hope this answer will help you

3 0

3 years ago

One of the characteristic of sound enogy Similarto light energy is?​

One of the characteristic of sound enogy Similarto light energy is?