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Travka [436]
2 years ago
15

Which of the following is a force acting between objects that do not touch? Pls answer in 5-10 min!

Physics
1 answer:
lisabon 2012 [21]2 years ago
8 0

Answer:

Electrical force

Explanation:

The electrons aren't actually touching each other. Normal is something on something pushed by gravity by they are touching, frictional is rubbing, applied is pushing

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Lab: Motion with Constant Acceleration Assignment: Lab Report
matrenka [14]

Answer

3

Explanation:

x=v_{0}<em>t + 1/2 </em>at^{2}<em />

3 0
3 years ago
As a clinical chemist in charge of the testing of blood samples. You are required to mix a solution of sodium chloride with wate
Natalka [10]
<span>7.8x102 x 1.95x10<span>3 this is the answer mate
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6 0
4 years ago
A 1400 kg car moving +13.7 m/s makes an elastic collision with a 3200 kg truck, initially at rest. What is the velocity of the c
marishachu [46]

Answer:

-13.7m/s

Explanation:

If the car has a mass of 1400kg with a speed of +13.7m/s -> hits [email protected] rest and bounces with an elastic collision:

fm = -fm

Therefore, the speed the car will possess will be at a negative state.

= -13.7m/s

6 0
3 years ago
An object moving with constant acceleration changes its speed from 20 m/s to 60 m/s in 2.0 s. What is the acceleration? (b) How
iris [78.8K]

Answer:

acceleration, a = 20 m/s^{2}

distance, d = 80 m

Given:

Initial velocity of object, v = 20 m/s

Final velocity of object, v' = 60 m/s

Time interval, \Delta t = 2.0 s

Solution:

(a) Acceleration is the rate at which velocity changes and constant acceleration is when the velocity changes by equal amount in equal intervals of time.

Thus

acceleration, a = \frac{v' - v}{\Delta t}

a = \frac{60 - 20}{2.0} = 20 m/s^{2}

(b) Now, the distance covered is  given by:

d = vt + \frac{1}{2}at^{2}

d = 20\times 2.0 + \frac{1}{2}20\times 2^{2} = 80 m

3 0
3 years ago
4. What is the momentum of a 70 kg object traveling at 20 m/s?
Soloha48 [4]

Answer:

1400 units of momentum.

Explanation:

Using the formula p=mv. We can get the momentum using 70*20 =1400 units of momentum

6 0
3 years ago
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