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3 years ago

Explain your answer. What parts of your hypothesis were strong correct? What parts were weak?

Physics

1 answer:

Anastaziya [24]3 years ago

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How to understand Planck law?

AVprozaik [17]

Do you have a book about it? or if you have a dictionary?

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3 years ago

The transfer of energy as electromagnetic waves is called (blank)

coldgirl [10]

<span>The transfer of energy as electromagnetic waves is called </span><span>electromagnetic radiation. The waves consist of vibrating electric and magnetic waves and they transfer energy through space or matter.</span>

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3 years ago

Weight of 1 kg becomes 1/6 on moon. If radius of moon is 1.76×10^6 m, then the mass of moon will be

igomit [66]

Answer:

7.65 x 10^22kg

sorry if im wrong!

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2 years ago

The electric field vector acts in the same direction as the force F vector if q is positive and in the opposite direction if q i

Contact [7]

Answer: Electric field vector is created by an electric force of a charged particle.

Explanation: The direction of the field vector can be determined by applying Coulomb’s Law which explains the electric force between charge particles. If q is positive the force is repulsive, to a test charge ( which is positive always ) and if q is negative the force is attractive to a test charge.

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3 years ago

A baseball is launched horizontally from a height of 1.8 m. The baseball travels 0.5 m before hitting the ground. How fast is th

zysi [14]

Answer:

0.83 m/s

Explanation:

FIrst of all, we have to find the time of flight, i.e. the time the baseball needs to reach the ground. This can be done by using the equation for the vertical motion:

$h=ut+\frac{1}{2}gt^2$

where

h is the initial height

u = 0 is the initial vertical velocity

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

t is the time

Substituting h = 1.8 m and solving for t,

$t=\sqrt{\frac{2h}{g}}=\sqrt{\frac{2(1.8)}{9.8}}=0.61 s$

We know that the horizontal distance travelled by the ball is

d = 0.5 m

Therefore, we can find the horizontal velocity (which is constant during the whole motion):

$v= \frac{d}{t}=\frac{0.5}{0.60}=0.83 m/s$

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3 years ago