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NISA [10]
3 years ago
7

Two objects have masses m and 5m, respectively. They both are placed side by side on a frictionless inclined plane and allowed t

o slide down from rest. Two objects have masses m and 5m, respectively. They both are placed side by side on a frictionless inclined plane and allowed to slide down from rest. A.The two objects reach the bottom of the incline at the same time.B.It takes the lighter object 5 times longer to reach the bottom of the incline than the heavier object. C.It takes the heavier object 10 times longer to reach the bottom of the incline than the lighter object. D.It takes the heavier object 5 times longer to reach the bottom of the incline than the lighter object. E.It takes the lighter object 10 times longer to reach the bottom of the incline than the heavier object.
Physics
1 answer:
Mama L [17]3 years ago
6 0

Answer:

A.The two objects reach the bottom of the incline at the same time.

Explanation:

-Since there is the incline is frictionless, there's no external force acting on the two objects except gravitational force(9.8N/kg).

-Gravitational acceleration ,9.8m/s^2, is equal for any two masses left in free fall despite the difference in massess.

-Therefore, the two bodies will reach the bottom of the incline at the exact same time.

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ivann1987 [24]

Answer:

  1. To derive an equation you must indicate the variable you want to solve for.
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  3. Two variables or unknown are given hence we cannot derive any other equations.
8 0
3 years ago
A 4 kg particle moves at a constant speed of 2.5 m/s around acircle of radius 2 m. What is its angular momentum about the center
blagie [28]

Explanation:

Given that,

Mass of the particle, m = 4 kg

Speed of the particle, v = 2.5 m/s

The radius of the circle, r = 2 m

We need to find the angular momentum about the center of the circle. The formula for the angular momentum is given by :

L=mvr

Substitute all the values,

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So, the angular momentum of the particle is 20 kg-m² s.

6 0
3 years ago
With the frequency set at the mid-point of the slider and the amplitude set at the mid-point of the slider, approximately how ma
Gre4nikov [31]

Answer:

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Explanation:

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Consequently the amplitude of independent of the frequency because it depends on different factors.

Therefore when changing the amplitude the wavelength remains constant

the correct answer is b

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What happens to the composition of an atom to cause it to become positively or negatively charged?
Usimov [2.4K]
An atom gains one or more electrons and becomes negatively charged, or loses one or more electrons and becomes positively charged.
5 0
3 years ago
Prove that f=ma where the symbols have their usual meaning.​
jekas [21]

Explanation:

According to Newton's second law of motion:

Force is directly proportional to

Change of momentum/time taken

Change of momentum= mv-mu

where m is mass, u is initial velocity and v is final velocity. so,

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F∝m(v-u)/t

F∝ma (a=v-u/t)

F=kma where k is a constant

In SI units the value of k will become one so the equation will be:

F=ma

7 0
3 years ago
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