3 years ago

Gravity is a force. True False

Physics

2 answers:

Ratling [72]3 years ago

7 0

The answer is true. Gravity is the force that keeps us all on the ground.

Allushta [10]3 years ago

5 0

The answer would be True. Gravity is a force in which matter attracts with other matter. The more mass an object has the stronger the force of gravity.

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there are 1.6 km in a mile. the distance between two cities is 248 miles. How many kilometers apart are the two cities?

podryga [215]

1.6 X 248=399.117
hope this helps

3 0

3 years ago

The electric potential difference across the membrane of a body cell is 0.070 V (higher on the outside than on the inside). The

12345 [234]

Answer:

The electric field is $8.75 \times 10^{6}~v~m^{-1}$ and the ditection is from outer to inner side of the membrane.

Explanation:

We know the electric field ( $\vec{E}$ ) is given by $\vec{E} = - \nabla V$ , 'V' being the potential.

In 1-D, it can be written as

$E=\dfrac{V}{d}$

where 'd' is the separation of space in between the potential difference is created.

Given, $V = 0.070~V~$ and the thickness of the cell membrane is $d = 8.0 \times 10^{-9}~m$ .

Therefore the created electric field through the cell membrane is

$E = \dfrac{0.07~V}{8 \times 10^{-9}~m} = 8.75 \times 10^{6}~m~s^{-1}$

5 0

3 years ago

An airplane has a starting velocity of 300m/s. It then accelerates at a rate of 45m/s2 for a time of 10s. What is it's final vel

Olenka [21]

A = (v - u) / t

a = acceleration
v = final velocity
u = initial velocity
t = time

45 = (v - 300) / 10

45 × 10 = v - 300

450 + 300 = v

v = 750 m/s

Hope this helps!

P.S. Let me know if you need an explanation

8 0

2 years ago

Why are latitude and longitude included on maps

Veseljchak [2.6K]

Answer:

to locate places on earth

3 0

2 years ago

The atmosphere protects us from all of the following except Meteorites The sun's rays Pollution Wind

denis23 [38]

Meteorites is the answer

6 0

3 years ago