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musickatia [10]
3 years ago
15

Need help with this physics problem!! 30 points if done!!!

Physics
2 answers:
Goryan [66]3 years ago
4 0

Answer:

40° 70° 8

Explanation:

Kryger [21]3 years ago
3 0

Hello!

For an object sliding down an inclined plane, there are two forces working on the object: The normal force and the force due to gravity.

Breaking the force due to gravity into its components, we get a force of:

Mgsinθ, parallel to the incline's slope. This is the NET force acting on the object, causing it to accelerate.

Since ∑F = m · a:

Mgsinθ = m · a

Divide by the mass:

a = gsinθ

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950kg. It is W=mg. therefore, mass= W/g which is W/10

=9500/10

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What is environmental cleanliness​
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8 0
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A car is moving initially at 30 m/s comes gradually at stop at 900 m . What is acceleration of the car ?
ziro4ka [17]

The acceleration of the car is 0.5 meters per seconds square.

Given the following data:

  • Initial velocity, U = 30 m/s
  • Distance, S = 900 meters

Note: The final velocity (V) of the car would be zero (0) m/s when it comes to a stop.

To find the acceleration of the car, we would use the third equation of motion;

Mathematically, the third equation of motion is given by the formula;

V^2 = U^2 - 2aS\\\\0 = 30^2 - 2a(900)\\\\0 = 900 - 1800a\\\\1800a = 900\\\\a = \frac{900}{1800}

<em>Acceleration, a </em><em>=</em><em> 0.5 </em>m/s^2<em></em>

Therefore, the acceleration of the car is 0.5 meters per seconds square.

Read more: brainly.com/question/8898885

4 0
2 years ago
A silver bar 0.125 meter long is subjected to a temperature change from 200°C to 100°C. What will be the length of the bar after
Delicious77 [7]
\Delta L=  \alpha L_0 (T_f-T_i)

= (18 x 10^-6 /°C)(0.125 m)(100° C - 200 °C)

= -0.00225 m

New length = L + ΔL
= 1.25 m + (-0.00225 m)
= 1.248

D
5 0
3 years ago
Read 2 more answers
How much kinetic energy does a 7.2-kg dog need to make a vertical jump of 1.2 m? (The acceleration due to gravity is 9.8 m/s2.)
V125BC [204]
<span>How much kinetic energy does a 7.2-kg dog need to make a vertical jump of 1.2 m?
</span>Answer:

85 Joule (approx)

Explanation:

Potential energy at highest point

<span><span>P.E = mgh = 7.2 kg × 9.8 m/s2</span>×1.2 m≈85 Joule</span>

This is the kinetic energy required for dog to jump a height of 1.2 m.



hope this helps!

7 0
3 years ago
Read 2 more answers
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