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3 years ago

Does lightning McQueen have car or life insurance?

Physics

1 answer:

shutvik [7]3 years ago

7 0

I am taking an educated guess that he has life insurance

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A 30.4-newton force is used to slide a 40.0-newton crate a distance of 6.00 meters at constant speed along an incline to a verti

Angelina_Jolie [31]

Hi there!

Since the crate is being slid at a constant speed, the forces sum to 0 N. In this instance, the following forces occur in the axis of interest:

Wsinθ = downward acceleration along incline due to gravity (N)

Fκ = kinetic friction force along incline (N)

A = applied force (N)

The acceleration due to gravity and friction force act in the same direction, so:

Wsinθ + Fκ = A

Solve for sinθ using right triangle trigonometry:

sinθ = O/H = 3/6 = 0.5

Rearrange the equation for the force of kinetic friction and solve:

Fκ = A - 0.5W

Fκ = 30.4 - 20 = 10.4 N

Now, recall that:

Work = Force × displacement (W = F × d)

Since the box's displacement is in the same axis as the force but OPPOSITE direction, we must use:

W = Fdcosθ

Angle between displacement and friction force is 180°.

cos(180) = -1

Work done by friction = -Fd = -10.4(6) = -62.4 J

8 0

3 years ago

Traits of an organisms passed from blank to offspring

Ostrovityanka [42]

Answer:heredity

Explanation:

6 0

3 years ago

Select the correct answer. Which characteristic is not a characteristic of plastic? OA easy to mold O'B. good conductor of heat

Doss [256]

Answer:

O'B. Good conductor of heat.

Explanation:

Plastic is not a good conductor of heat because it has no delocalized electrons it's surface to transfer heart.

7 0

3 years ago

A piece of aluminum with a mass of 3.05 g initially at a temperature of 10.8 °C is heated to a temperature of 20.

fgiga [73]

Answer:

25.3J

Explanation:

Given parameters:

Mass of aluminum = 3.05g

Initial temperature = 10.8 °C

Final temperature = 20 °C

Specific heat = 0.9J/g °C

Unknown:

Amount of heat needed for the temperature to change = ?

Solution:

To solve this problem, we use the expression:

H = m C Ф

H is the amount of heat

m is the mass

C is the specific heat capacity

Ф is the change in temperature

H = 3.05 x 0.901 x (20 - 10.8) = 25.3J

7 0

3 years ago

Which is an example of transforming potential energy to kinetic energy? Select two options

blsea [12.9K]

Answer : 

.changing chemical energy to thermal energy

.changing nuclear energy to radiant energy

Explanation : 

<h3>Hope it helps you mate ))</h3>

3 0

3 years ago