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Pavel [41]
3 years ago
10

A car enters the freeway with a speed of 6.4 m/s and accelerates uniformly for 3000 m in 210 seconds. How fast is the car moving

after this time?
Physics
1 answer:
dedylja [7]3 years ago
6 0

Answer:

I dont know i just need the points

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What is the potential energy of a 150 kg diver standing on a diving board that is 10 m high?
igomit [66]

Answer:

<h2>15,000 J</h2>

Explanation:

The potential energy of a body can be found by using the formula

PE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 10 m/s²

From the question we have

PE = 150 × 10 × 10

We have the final answer as

<h3>15,000 J</h3>

Hope this helps you

7 0
3 years ago
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What is the atomic number of an Neon atom with 10 protons and 11 neutrons in its nucleus, &amp; 10 Electrons in orbitals around
vesna_86 [32]

Answer:

10

Explanation:

The atomic number is only based on the number of the elements protons.  The neutrons and electrons will only change the atomic mass and properties of the element.  So the atomic number is 10.

7 0
3 years ago
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An artillery shell is fired at an angle to the horizontal. Its initial velocity has a vertical component of 150 meters per secon
Nana76 [90]

Answer:

300.16m/s

Explanation:

An artillery shell is fired at an angle to the horizontal. Its initial velocity has a vertical component of 150 meters per second and a horizontal component of 260 meters per second. What is the magnitude of the initial velocity of the shell?

note velocity is the change in displacement to time

to find the magnitude of the initial speed ,

we will find the square of the vertical component plus the square of the horizontal component. then we look for the square root

U=\sqrt{Ux^2+Uy^2}

U=\sqrt{260^2+150^2}

U=90,100^2

U=300.16m/s

means that it covers 300.16m in 1 seconds

5 0
3 years ago
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9966 [12]
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7 0
3 years ago
What should be angle between force and displacement to get the maximum work​
Bas_tet [7]

Answer:

0°

Explanation:

The angle between force and displacement should be 0° in order to get the maximum work done.

 

 Work done  = Force  x dcosФ°  

  Ф is the angle between force and displacement

When Ф is zero, the maximum work done is attained

When Ф is 90, the minimum work is done, in fact, work done is 0

3 0
3 years ago
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