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3 years ago

HELP ASAP! GIVING BRAINLIEST!

2 answers:

4 0

Answer: The narrator is pointing out that energy is involved in every event, and each event can be described in terms of energy.

Explanation: plato answer

pochemuha3 years ago

3 0

He means that the universe transgressed through different forms as it evolved; it could also be an analogy about the different processes the universe went through throughout the 13 trillion years to present day.

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17. The Earth exerts a gravitational force of 0.750 N on an object.

n200080 [17]

Answer:

0.076 kg

Explanation:

The force created by gravity can be found using mass x (9.8 m/s^2).

mg=0.750 N

m(9.8) = 0.750

Multiply both sides by 9.8: m = 0.076 kg

8 0

3 years ago

( WILL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST AND SHOWS WORK) A car weighs 15300 N. What is its mass?

mylen [45]

Answer:

Mass, m = 1561.23kg

Explanation:

Given the following data;

Weight = 15300N

We know that acceleration due to gravity is equal to 9.8m/s²

To find mass;

Weight can be defined as the force acting on a body or an object as a result of gravity.

Mathematically, the weight of an object is given by the formula;

$Weight, W = mg$

Where;

m represents the mass of an object measured in kilograms.

g is the acceleration due to gravity measured in meters per seconds square.

Substituting into the equation, we have;

$15300 = m*9.8$

$m = \frac {15300}{9.8}$

<em>Therefore, the mass of the car is 1561.23 kilograms.</em>

7 0

3 years ago

If the sphere on the left is moved closer to the central cylinder and placed at a distance R/2 from the axis of rotation, what i

Alexxx [7]

Answer:

$\alpha= \frac{2rF}{3mR}$

Explanation:

The torque reqired to rotate the above masses rod system

$\tau = rF= I\alpha$ ...............(1)

Total moment of inertia of masses and rod is

$I=2m\left ( \frac{R}{2} \right )^2+mR^{2}$

= $\frac{3}{2} mR^{2}$

now Substitute I= $\frac{3}{2} mR^{2}$ in the (1) we get

$rF= \frac{3}{2}mR^{2}\alpha$

rearranging for alpha we get

$\alpha= \frac{2rF}{3mR}$

hence the acceleration is

$\alpha= \frac{2rF}{3mR}$

7 0

4 years ago

Your brother is insisting that you'll never hear a sound produced behind a barrier wall at the end of your yard. You notice that

Neko [114]

Due to the barrier being broken the sound will go threw but if the door was closed all the way it would be different and there would be no space for the sound to slip threw

8 0

4 years ago

Read 2 more answers

a stone is thrown straight upwards from the edge of a 24.0 m high cliff. It just misses the cliff on the way down, and it hits t

Simora [160]

Answer:

47.5 m/s

Explanation:

Given:

Δy = -24.0 m

v = -42.3 m/s

a = -9.8 m/s²

Find: v₀

v² = v₀² + 2aΔy

v² = (-42.3 m/s)² + 2 (-9.8 m/s²) (-24.0 m)

v = 47.5 m/s

5 0

3 years ago