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exis [7]
3 years ago
12

Which of the following objects have gravitational potential energy?

Physics
2 answers:
Jlenok [28]3 years ago
6 0

Answer:

an apple on a tree branch 3m above the ground

Explanation:

Brut [27]3 years ago
3 0

Answer:

The apple

Explanation:

The apple has gravitational potential energy because it is just sitting there but nothing is pushing it up, it is not sitting on something. This means that it has a lot of gravitational potential energy as nothing is pushing it up.

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Consider a single photon with a wavelength of lambda, a frequency of nu, and an energy of E. What is the wavelength, frequency,
BARSIC [14]

Answer: lambda \lambda, nu \nu, and 100E

Explanation:

The energy E of a photon is given by:

E=h\nu   (1)

Where:

h is the Planck constant

nu is the frequency

On the other hand, we have an expression that relates the frequency of the photn with its wavelength \lambda:

nu=\frac{c}{\lambda} (2) where c is the speed of light

Substituting (2) in (1):

E=h\frac{c}{\lambda}   (3) This is the energy for a single photon

For 100 photons, the energy is:

100E=100(h\frac{c}{\lambda})=100h\nu   (3)

Where the wavelength and the frequency of the light remains constant.

Therefore, the answer is:

\lambda, \nu, and 100E

5 0
3 years ago
A car is traveling at a constant velocity of magnitude v0 when the driver notices a garbage can on the road in front of him. at
slava [35]
Total distance travelled by the car is 'd' 
<span>distance trveled before the brakes were applied = v_o * t </span>
<span>distance travld with brakes = d - v_o*t </span>
<span>applying the formula: v^2 - u^2 = -2 a * s </span>
<span>=> 0 - v_o^2 = -2 * a_x * (d- v_o*t) </span>
<span>=> a_x = (v_o^2)/ ( 2 (d-v_o*t)</span>
7 0
3 years ago
Read 2 more answers
5. The rate at which an organism uses energy, measured in humans at complete<br> rest.
yuradex [85]

Answer:

n. Abbr. BMR. The rate at which energy is used by an organism at complete rest, measured in humans by the heat given off per unit time, and expressed as the calories released per kilogram of body weight or per square meter of body surface per hour.

Explanation:

3 0
2 years ago
To help you rank the reactivity of the three metals you will be creating atomic charge models for each of the elements. You may
gtnhenbr [62]

Metals tend to readily lose electrons and form cations. Most of them react with atmospheric oxygen to form metal oxides. However, different metals have different reactivities towards oxygen (unreactive metals such as gold and platinum do not readily form oxides when exposed to air

4 0
2 years ago
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How does mass and distance affect gravitational force?
loris [4]

Answer:

It shows that the gravitational force is directly proportional to the product of masses of two bodies and inversely proportional to the square of distance between them, So, as the mass of bodies increases, the gravitational force increases and with the increase of distance between them, the gravitational force decreases.

Explanation:

4 0
3 years ago
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