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Soloha48 [4]
3 years ago
8

Several motorboats with the same mass are used in an experiment. The forces of the different motors versus their accelerations a

re graphed. What is the y-intercept of this graph? (1point) Does anyone know the answer?
Physics
1 answer:
Yuliya22 [10]3 years ago
7 0

Answer:

C. the velocity

Explanation:

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Show all work.
lys-0071 [83]

The new gravitation force at the new location is 40 N

Explanation:

The weight of the astronaut is given by the equation

F=mg (1)

where

m is the mass of the astronaut

g is the acceleration of gravity

The acceleration of gravity at a certain distance r from the centre of the Earth is given by

g=\frac{GM}{r^2}

where G is the gravitational constant and M is the Earth's mass. So we can rewrite eq.(1) as

F=\frac{GMm}{r^2}

When the astronaut is on the Earth's surface, r=R (where R is the Earth's radius), so his weight is

F=\frac{GMm}{R^2}=640 N

Later, he moves to another location where his distance from the Earth's surface is 3 times the previous distance, so the new distance from the Earth's centre is

r'=3R+R=4R

Therefore, the new weight is

F'=\frac{GMm}{(4R)^2}=\frac{1}{16}\frac{GMm}{R^2}=\frac{F}{16}

Which means that his weight has decreased by a factor 16: therefore, the new weight is

F'=\frac{640}{16}=40 N

Learn more about gravitational force:

brainly.com/question/1724648

brainly.com/question/12785992

#LearnwithBrainly

3 0
3 years ago
What part of the plant takes in carbon dioxide?
murzikaleks [220]

The answer is number 2 stomata.

4 0
3 years ago
Read 2 more answers
An astronaut is stationary in space. Which of these would have the greatest speed as observed by the astronaut?
yaroslaw [1]
Hello!

The answer that makes most sense to me is option A.

~ Hope I helped! ~
7 0
3 years ago
Read 2 more answers
If Isaiah is driving his new car on the highway, and goes 103.5 meters in 5.5 seconds,
Andrej [43]

Answer:

103.5m/5.5s= 18.8m/s

Explanation:

Formula for finding velocity average is:

v average= change in x(meters)/ change in time(seconds).

4 0
3 years ago
Answer??????????????
solong [7]
The number of protons!!
3 0
2 years ago
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