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3 years ago

How many earth years does it take mars to orbit the sun

Physics

1 answer:

Colt1911 [192]3 years ago

4 0

This is a question that would have literally have taken two seconds to look up on google but the answer is 1.88 years.

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I need help with # 21 what does F Net equals & a??

liubo4ka [24]

The a means acceleration. F net means the Net force.

5 0

3 years ago

A proton is projected toward a fixed nucleus of charge +Ze with velocity vo. Initially the two particles are very far apart. Whe

Rzqust [24]

Answer:

$\frac{4}{5}R$

Explanation:

Using the law of conservation of energy for both cases, when the proton is at distance R from the nucleus with a final velocity equal to $\frac{1}{2}v_0$ and when the proton is at distance R' from the nucleus with a final velocity equal to $\frac{1}{4}v_0$ . Recall that initially the two particles are very far apart, so there is no initial potential energy. For the first case, we have:

$\Delta K=\Delta U\\K_{f}-K_{i}=U_{f}-U_{i}\\\frac{1}{2}m(v_{f})^2-\frac{1}{2}m(v_{0})^2=\frac{ke(Ze)}{R}-0\\\frac{1}{2}m(\frac{1}{2}v_{0})^2-\frac{1}{2}m(v_{0})^2=\frac{kZe^2}{R}\\\frac{1}{2}m\frac{1}{4}(v_{0})^2-\frac{1}{2}m(v_{0})^2=\frac{kZe^2}{R'}\\\frac{1}{8}m(v_{0})^2-\frac{1}{2}m(v_{0})^2=\frac{kZe^2}{R'}\\-\frac{3}{8}m(v_{0})^2=\frac{kZe^2}{R}(1)\\$

In the same way, for the second case, we have:

$\frac{1}{2}m(\frac{1}{4}v_{0})^2-\frac{1}{2}m(v_{0})^2=\frac{ke(Ze)}{R'}\\\frac{1}{2}m\frac{1}{16}(v_{0})^2-\frac{1}{2}m(v_{0})^2=\frac{kZe^2}{R'}\\\frac{1}{32}m(v_{0})^2-\frac{1}{2}m(v_{0})^2=\frac{kZe^2}{R'}\\-\frac{15}{32}m(v_{0})^2=\frac{kZe^2}{R'}(2)\\$

Finally, dividing (2) in (1):

$\frac{-\frac{15}{32}m(v_{0})^2}{-\frac{3}{8}m(v_{0})^2}=\frac{\frac{kZe^2}{R'}}{\frac{kZe^2}{R}}\\\\\frac{\frac{15}{32}}{\frac{3}{8}}=\frac{R}{R'}\\R'(\frac{120}{96})=R\\R'(\frac{5}{4})=R\\R'=\frac{4}{5}R$

4 0

4 years ago

a 6.7kg object moves with a velocity of 8 m/s. whats its kinetic energy?(A)26.8J(B)214.4J(C)167.5J(D)53.6J

Ne4ueva [31]

The answer in (B)214.4J

I hope this helped have a nice day!

6 0

4 years ago

Read 2 more answers

Explain how an adaptation can enable an organism to survive a long-term environmental change

olasank [31]

Answer:

Living organisms are adapted to their environment. This means that the way they look, the way they behave, how they are built, or their way of life makes them suited to survive and reproduce in their habitats. ... Behavior is also an important adaptation. Animals inherit many kinds of adaptive behavior.

Explanation:

brainliest please

7 0

3 years ago

There is no gravity in outer space . explain why this statement is true or false

lisabon 2012 [21]

There is no gravity in outer space but when you near a planet or star you will start to feel or experience different pulls of gravity. hope this helps :) Please mark brainlist

5 0

3 years ago