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aivan3 [116]
4 years ago
6

Which statement best describes the energy changes that occur while a child is riding on a sled down a steep, snow-covered hill?

Physics
2 answers:
Tema [17]4 years ago
6 0
<span>Kinetic energy increases and potential energy decreases.
</span>
marishachu [46]4 years ago
3 0
The answer ur looking for is B  
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Two factors which cause global climate change are listed below.
Vika [28.1K]
I believe the answer is <span>c. Factor 1 is a natural factor and Factor 2 is a human induced factor.
The amount of heat received by the sun has increased because of the amount of CO2 which human expelled to the atmosphere.
Because of this CO2, the heat from the sun couldn't be reflected outside the atmosphere and trapped within the earth.</span>
4 0
3 years ago
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If a photon has a frequency of 5.20 × 1014 hertz, what is the energy of the photon? Given: Planck's constant is 6.63 × 10-34 jou
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Answer:
E=h.f

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4 0
3 years ago
The Surface Pressure at Leh, Ladakh is 800 mb. Now, assuming that Leh is at an altitude of 3500 m and every 100 m increase in he
Basile [38]

We have that the sea level pressure for Leh area is 1150mb mathematically given as

Ps= 1150 mb

<h3> Sea level pressure</h3>

Question Parameters:

Ladakh is 800 mb.

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increase in height with respect to sea level corresponds to 10 mb pressure,

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8 0
2 years ago
What minimum speed does a 100 g puck need to make it to the top of a 4.60 m -long, 24.0 ∘ frictionless ramp?
mash [69]

Answer:

6.05 m/s

Explanation:

In order for the puck to reach the top of the ramp, its initial kinetic energy must be equal to its final potential energy.

So we can write:

KE=PE\\\frac{1}{2}mv^2 = mgh (1)

where

m = 100 g = 0.1 kg is the mass of the puck

v is the initial speed of the puck

g=9.8 m/s^2 is the acceleration due to gravity

h is the height of the ramp

Here we know that

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\theta=24.0^{\circ} is the angle of the ramp

So its height is

h=d sin \theta = (4.60)(sin 24.0^{\circ})=1.87 m

So now we can re-arrange eq (1) to find the minimum speed of the puck:

v=\sqrt{2gh}=\sqrt{2(9.8)(1.87)}=6.05 m/s

4 0
3 years ago
A rescue pilot drops a survival kit while her plane is flying at an altitude of 2000.0 m with a forward velocity of 100.0 m/s.
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