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3 years ago

If you apply force on an object such as a ball, what will possibly happen to it?

Physics

1 answer:

alexandr402 [8]3 years ago

4 0

It will move in the direction you pushed it, but it will go at a certain velocity

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The molecule that traps the sun's energy is ?.

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The molecule that trap's the sun's energy is chlorophyll.

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3 years ago

A playground is on the flat roof of a city school, 6.2m above the street below. The vertical wall of the building is h=7.30m hig

olya-2409 [2.1K]

Answer:

a. 18.13m/s

b. 0.84m

c. 2.4m

Explanation:

a. to find the speed at which the ball was lunched, we use the horizontal component.Since the point distance from the base of the ball is 24m and it takes 2.20 secs to reach the wall,we can say that

t=distance /speed

$speed v_{x}=vcos\alpha=24/2.2=10.9m/s\\V=10.9/cos53^{0}\\V=18.13m/s$

Hence the speed at which ball was lunched is 18.13m/s

b. from the equation

$y=v_{y}t-\frac{1}{2}gt^{2}\\ v_{y}=18.13sin53=14.48m/s\\\\y=(14.48*2.2)-\frac{1}{2}9.8*2.2^{2}\\y=8.14m\\$

the vertical distance at which the ball clears the wall is

y=8.14-7.3=0.84m

c. the time it takes the ball to reach the 6.2m vertically

$6.2=14.47t-4.8t^{2}\\\\14.47t-4.8t^{2}-6.2=0\\\using\\t=-b±\frac{\sqrt{b^{2}-4ac} }{2a}\\ where \\a=-4.8, b=14.47t, c=6.2\\hence t=2.4secs$

the horizontal distance covered at this speed is

$y+24=(18.13cos53)2.4\\y=26.186-24\\y=2.12m$

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3 years ago

g A small object of mass 2.5 g and charge 18 uC is suspended motionless above the ground when immersed in a uniform electric fie

kvasek [131]

Answer: $1361.11\ N/C,\text{upward}$

Explanation:

Given

Mass of particle is $m=2.5\ gm$

Charge of particle is $q=18\ \mu C$

Electrostatic force must balance the weight of the particle

$\lim_{n \to \infty} a_n \Rightarrow mg=qE\\\\\Rightarrow E=\dfrac{2.5\times 9.8\times 10^{-3}}{18\times 10^{-6}}\\\\\Rightarrow E=1361.1\ N/C$

Direction of the electric field is in upward direction such that it opposes the gravity force.

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3 years ago

Find the velocity of a truck traveling north 50m in 20 seconds.

xz_007 [3.2K]

Answer:

2.5 m/s north

Explanation:

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3 years ago

When dealing with the conservation of momentum, does direction matter?

allochka39001 [22]

Answer:

Momentum is conserved in all three physical directions at the same time.

Explanation:

There is a peculiarity, however, in that momentum is a vector, involving both the direction and the magnitude of motion, so that the momenta of objects going in opposite directions can cancel to yield an overall sum of zero.

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3 years ago

If you apply force on an object such as a ball, what will possibly happen to it?​

If you apply force on an object such as a ball, what will possibly happen to it?