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3 years ago

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a car accelerates uniformly from rest to a speed of 51.9mi/h in 9.37s. find the constant acceleration of the car. answer in unit

s of m/s^2

1 answer:

Darina [25.2K]3 years ago

3 0

Here is my step-by-step-work. Let me know if you have any questions! :)

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Complete the wording of the Law of Conservation of Matter and Energy (as defined in the text).

Aleks [24]

Answer:

Neither "matter" nor "energy" can be created or destroyed, but they can be changed from one form to the other.

Explanation:

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3 years ago

The grounded conductor and the grounding conductor are one and the same conductor and perform the same function.

STALIN [3.7K]

Answer:

Grounded used to carry the current in the normal conditions. while on the other side grounding is refer to that safety wire that is connected to the earth and currently does not transmit through it.

As grounding wire is referred to as safety wire hence it carries current only in an emergency like a short circuit.

Explanation:

A grounded conductor is referred to as one of the wire that needed in an electric circuit. it is basically a neutral conductor. It used to carry the current in the normal conditions. while on the other side grounding is refer to that safety wire that is connected to the earth and currently does not transmit through it.

As grounding wire is referred to as safety wire hence it carries current only in an emergency like a short circuit.

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3 years ago

Competitive divers pull their limbs in and curl up their bodies when they do somersaults. Just before entering the water, they f

Akimi4 [234]

Answer:

The angular velocity is reduced when the body is fully stretched.

Explanation:

Divers keep there bodies as compact as possible just to increase the angular velocity.

When they extend their limbs to enter straight down the angular momentum helps them to dive. The angular velocity is reduced when the body is fully stretched and diver's inertia is also not reduced. Thus a streamlined shape is formed which helps to penetrate more deeper into the water.

The impact area is reduced when fully stretched body is entered in to the water.

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3 years ago

A 7.45 nC charge is located 1.66 m from a 4.22 nC point charge. (a) Find the magnitude of the electrostatic force that one charg

BaLLatris [955]

Answer:

a. $F=1.03\times 10^{-7}N$

b.Repulsive

Explanation:

We are given that

$q_1=7.45nC=7.45\times 10^{-9}C$

$1nC=10^{-9}C$

$q_2=4.22nC=4.22\times 10^{-9}C$

r=1.66m

We know that

Electrostatic force = $F=k\frac{q_1q_2}{r^2}$

r=Distance between $q_1\;and\;q_2$

k=Constant= $9\times 10^9Nm^2C^{-2}$

Using the formula

a.The magnitude of the electrostatic force= $F=\frac{9\times 10^9\times 7.45\times 10^{-9}\times 4.22\times 10^{-9}}{(1.66)^2}$

The magnitude of the electrostatic force= $F=1.03\times 10^{-7}N$

b.Both charge are positive .We know that when like charges repel each other and unlike charges attract to each other.

Therefore, the force between given charges is repulsive.

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3 years ago

In a warehouse, the workers sometimes slide boxes along the floor to move them. Two boxes were sliding toward each other and cra

san4es73 [151]

Answer:

Box 1 has more mass than box 2.

Explanation:

Box 1 has more mass than box 2, as it caused a greater affect in the change of speed of box 2. During a collision, the object with a lesser mass will be affected more, causing the velocity to change more. Because box one is greater than box 2, it caused a larger change in speed when they collided.

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3 years ago