3 years ago

This scientist focused his study on planetary motion. One of his laws is the planets orbit the Sun in elliptical patterns.

1 answer:

8 0

I believe that since Kepler focused his studies the rotation of the planets, and the stars, that he is the one who developed the law, which is called the first law of planetary motion.

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What is the kinetic energy of a 3.8kg ball that is rolling at 2.2 m/s

labwork [276]

Kinetic energy = 0.5 x m x v²
Kinetic energy = 0.5 x 3.8 x 2.2²
Kinetic energy = 9.196 J

3 0

3 years ago

Leila is presenting her project about gravity to her class she says that both mass and distance affect how strong the gravitatio

Serhud [2]

Answer:

yes

Explanation:

6 0

3 years ago

A toy rocket is launched straight up by using a spring. The rocket is initially pressed down on the spring so that the spring is

Delvig [45]

Answer:

B.6.86 m

Explanation:

Given that

Compression in spring ,x= 9 cm

Spring constant ,K= 830 N/m

Mass of the rocket ,m= 50 g = 0.05 kg ( 1 kg = 1000 g)

Now by applying energy conservation

$\dfrac{1}{2}Kx^2=mgh$

$h=\dfrac{1}{2\times mg}kx^2$

Now by putting the values ( we are taking g= 9.81 m/s²)

$h=\dfrac{1}{2\times 9.81\times 0.05}\times 830\times 0.09^2$

h= 6.853 m

Therefore the answer is B.

B.6.86 m

8 0

3 years ago

1.<br>The force of gravity on an object is<br>the measure of the object's<br>mass<br>weight

algol13

Answer:

Weight

Explanation:

5 0

3 years ago

1. Los Angeles lies on Pacific plate, San Francisco lies on North American plate. When will the two cities meet if the distance

spin [16.1K]

Los Angeles lies on the Pacific plate, San Francisco lies on the North American plate, and the meeting point of the two cities is mathematically given as

T = 120 x 105 years

<h3>What is the meeting point of the two plates?</h3>

Generally, the equation for Distance is mathematically given as

D = Rate x Time

Therefore

T = D/R

T = (600 x 105) / 5

T = 120 x 105 years

In conclusion, the meeting point of the two plates will be

T = 120 x 105 years