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3 years ago

Which best compares the gravitational force and the strong force ?

2 answers:

8 0

<span>The heavier the body is, the stronger its gravitational pull. Example, the Milky Way Galaxy has a gravitational pull because of the heavenly bodies such as stars and planets are surrounding it. A strong force is exerted if the mass of another body is bigger than the other body.</span>

Natali [406]3 years ago

3 0

Explanation:

Gravitational force :

Gravitation force is an attractive force which act between two bodies.

This force acts between the objects with mass.

The gravitational force is the proportional to the product of their masses of the bodies and inversely proportional to the square of distance between the bodies.

Gravitational force only attraction force.

The gravitational force is very weak force.

Strong force :

The force which holds nucleus together it called strong force.

This force is attractive and repulsive force.

The strong force like electromagnetic force it has short range.

The range of strong force is 10⁻¹⁵ m.

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Answer:

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3 years ago

When the temperature of 2.35 m^3 of a liquid is increased by 48.5 degrees Celsius, it expands by 0.0920 m^3. What is its coeffic

Nuetrik [128]

Answer:

$8.1\cdot 10^{-4} C^{-1}$

Explanation:

The volumetric expansion of the liquid is given by

$\Delta V=\alpha V_0 \Delta T$

where

$\alpha$ is the coefficient of volume expansion

$V_0$ is the initial volume

$\Delta T$ is the change in temperature

For the liquid in this problem,

$V_0 = 2.35 m^3\\\Delta T=48.5^{\circ}C\\\Delta V=0.0920 m^3$

So we can solve the equation to find $\alpha$ :

$\alpha=\frac{\Delta V}{V_0 \Delta T}=\frac{(0.0920 m^3)}{(2.35 m^3)(48.5^{\circ}C)}=8.1\cdot 10^{-4} C^{-1}$

7 0

4 years ago

1) A sound wave produced by an alarm is heard 668m away 2.0s later. a) What is the speed of sound of the alarm in the air? b) Th

NARA [144]

Answer:

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4 0

3 years ago

The total amount of electrical energy used by a

tia_tia [17]

The amount of electrical energy used by the television is given by:

$E=Pt$

where P is the power of the device and t is the time.

The power of the television is P=315 W, while the total time is

$t=30.0 min \cdot 60 =1800 s$

If we substitute these numbers into the formula, we find the energy:

$E=Pt=(315 W)(1800 s)=5.67 \cdot 10^5 J$

so, the correct answer is

(1) 5.67 × 10^5 J

7 0

3 years ago

Read 2 more answers

A student at the top of a building of height h throws ball A straight upward with speed v0 (3 m/s) and throws ball B straight do

Flauer [41]

Answer:same

Explanation:

Given

ball A initial velocity=3 m/s(upward)

Ball B initial velocity=3 m/s (downward)

Acceleration on both the balls will be acceleration due to gravity which will be downward in direction

Both acceleration is equal

For ball A

maximum height reached is $h_1=\frac{3^2}{2g}$

After that it starts to move downwards

thus ball have to travel a distance of h_1+h(building height)

so ball A final velocity when it reaches the ground is

$v_a^2=2g\left ( h_1+h\right )$

$v_a^2=2g\left ( 0.458+h\right )$

$v_a=\sqrt{2g\left ( 0.458+h\right )}$

For ball b

$v_b^2-\left ( 3\right )^2=2g\left ( h\right )$

$v_b^2=2g\left ( \frac{3^2}{2g}+h\right )$

$v_b=\sqrt{2g\left ( 0.458+h\right )}$

thus $v_a=v_b$

5 0

3 years ago