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Nikitich [7]
3 years ago
13

A 1-kilogram object is thrown horizontally and a 2-kilogram object is dropped vertically at

Physics
1 answer:
Semenov [28]3 years ago
4 0
Their vertical position will be the same for both at any instant. They will both hit the ground at the same time.
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An outfielder throws a 1.1 kg baseball at a speed of 62 m/s and an initial angle of 12.3 ◦ . What is the kinetic energy of the b
Monica [59]

Answer:

= 2,018.3 J

Explanation:

mass (m) = 1.1 kg

velocity (v) = 62 m/s

initial angle(θ) = 12.3°

kinetic energy = 0.5mv^{2}

where

  • m is the mass
  • v is the velocity, which has two components

      v = Vx + Vy  (horizontal component + vertical component)

      at the maximum height, velocity is 0, so Vy = 0 and v= Vx

      v = Vx = v.cosθ

      v = 62 x cos 12.3 = 60.6 m/s

therefore kinetic energy = 0.5mv^{2} = 0.5x1.1x60.6^{2}

= 2,018.3 J

6 0
3 years ago
Which of the following statements is false?
Allushta [10]

Answer:

C

Explanation:

The weight of an object is 1/6 of the earth's weight in the moon

For example if your weight is 54 kg on earth,

Weight on moon=1/6 of 54=1/6 x 54 = 9kg

7 0
3 years ago
Read 2 more answers
A 0.20 kg stone is dropped (from rest) from a height of 40.0 m above the ground. How far above the ground is the stone when it's
Jlenok [28]
The farthest is 12


And the ground has to be 30
7 0
3 years ago
Waves are observed passing under a dock. Wave crests are 8.0 meters apart. The time for a complete wave to pass by is 4.0 second
Debora [2.8K]
<h3><u>Answer;</u></h3>

The period of the wave is <u><em>4 seconds</em></u>

<h3><em><u>Explanation;</u></em></h3>
  • <em><u>The period of a wave or periodic time is the time taken for one complete oscillation to occur.</u></em> In this case, one complete oscillation occurs when the wave moves from one crest to the next or a trough to the next. <em><u>This takes 4 seconds. Therefore the period is 4 seconds.</u></em>
  • <em><u>Frequency on the other hand is the number of oscillations by a wave in one second. Thus, f = 1/T, that is frequency is the reciprocal of periodic time.</u></em>
4 0
3 years ago
Read 2 more answers
What is the relationship between wavelength of light and the quantity of energy per photon?
slamgirl [31]

Answer:

The quantity of energy per photon is inversely proportional to the wavelength of the light.

Explanation:

Energy of light is given as

E = hf

where E = energy of the photons,

f = frequency of the light

If the number of photons = n

(E/n) = (h/n) f

Let (E/n) = E'

(h/n) = h'

But the frequency of light is related to wavelength through the relation

v = fλ

where v = speed of light = c

λ = wavelength of light

f = (c/λ)

E' = h' f

Substituting for f

E' = h' (c/λ)

h' and c are both constants, h'×c = K

E' = (K/λ)

So, the quantity of energy per photon is inversely proportional to the wavelength of the light.

Hope this Helps!!!

3 0
3 years ago
Read 2 more answers
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