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3 years ago

What are the characteristics of high energy waves?

Physics

2 answers:

liq [111]3 years ago

6 0

Answer:

High energy waves are louder

Have a higher amplitude

Peaks are higher and the valleys are lower

Explanation:

*Hope this helps*

Temka [501]3 years ago

4 0

Amplitude and frequency

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If you blow up a balloon, tie it off, and release it, it will fall to the ground.

RoseWind [281]

Answer:

carbon dioxide (what you are blowing up the balloon with) is a heavy gas. so when you fill the Balloon with it, the balloon will not float. helium is a light gas and floats. gravity takes another. part in this

8 0

3 years ago

A 1870 kg car traveling at 13.5 m/s collides with a 2970 kg car that is initally at rest at a stoplight. The cars stick together

Inga [223]

Answer:

The value is $\mu = 0.72$

Explanation:

From the question we are told that

The mass of the first car is $m_1 = 1870\ kg$

the initial speed of the car is $u = 13.5 \ m/s$

The mass of the second car is $m_2 = 2970\ kg$

The distance move by both cars is s = 1.93 m

Generally from the law of momentum conservation

$m_1 * u_1 + m_2 * u_2 = (m_1 + m_2 ) * v_f$

Here $u_2 = 0$ because the second car is at rest

and $v_f$ is the final velocity of the the two car

$1870* 13.5+ 0= ( 1870 + 2970 ) * v_f$

=> $v_f = 5.22\ m/s$

Generally from kinematic equation

$v_f^2 = u_2^2 + 2as$

here a is the deceleration

$5.22^2 = 0 + 2 *a * 1.93$

=> $a = 7.06 \ m/s^2$

Generally the frictional force is equal to the force propelling the car , this can be mathematically represented as

$F_f = F$

Here F is mathematically represented as

$F = (m_1 + m_2) * a$

$F = (1870 + 2970) * 7.06$

$F =34170.4 \ N$

and

$F_f = \mu * (m_1 + m_2 ) * g$

$F_f = 47432 * \mu$

$47432 * \mu = 34170.4$

=> $47432 * \mu = 34170.4$

=> $\mu = 0.72$

6 0

3 years ago

A 60kg man jumps off a 30 foot building. Assuming he falls from rest and there is negligible air resistance, how long will it ta

Dmitriy789 [7]

Answer:

1.37 seconds before.... splat !

Explanation:

y = y0 + v0 t + 1/2 a t^2 y0 = 30 y = 0

v0 = 0 ( from rest)

a = - 32.2 ft/s^2

0 = 30 - 1/2 * 32.2 * t^2

t=1.366 seconds Note that mass is irrelevant.

5 0

2 years ago

A friend of yours is wearing a green shirt. Why is their shirt green?

IRISSAK [1]

Answer:

The answer is the shirt would disappear because I would eat him

4 0

3 years ago

How much energy is needed to change the temperature of 50.0 g of water by 15.0oc?

UkoKoshka [18]

The amount of energy needed to increase the temperature of a substance by $\Delta T$ is given by:
$Q=m C_s \Delta T$
where
m is the mass of the substance
Cs is the specific heat capacity of the substance
$\Delta T$ is the increase in temperature

In our problem, m=50.0 g, $C_s = 4.18 J/g ^{\circ}C$ (specific heat capacity of water) and $\Delta T=15.0 ^{\circ}C$ , therefore the amount of energy needed is
$Q=mC_s \Delta T=(50.0 g)(4.18 J/g^{\circ}C)(15.0^{\circ}C)=3135 J$

3 0

3 years ago