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beks73 [17]
3 years ago
6

A ball is thrown straight up from point A, reaches a maximum height at point B, and then falls back to point C. Which of the fol

lowing is true about the ball’s velocity and acceleration the highest point B

Physics
1 answer:
ratelena [41]3 years ago
8 0
PE.....................
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b. What would the momentum be if the mass of the bowling ball were doubled and its velocity still was 3 m/s?​
umka2103 [35]

Answer:

Twice.

Explanation:

The momentum of an object is given by :

p = mv

Where

m is mass and v is the velocity

If the mass of the ball were doubled, m'=2m and v'=v=3 m/s

New momentum,

p'=m'v'

p'=2m × v

p'=2mv

or

p'=2p

So, the new momentum becomes twice the initial momentum.

6 0
3 years ago
A circuit has a current of 3.6 A and a resistance of 5.0 Ω.
Sergio039 [100]
If a circuit has a current of 3.6 Amps and resistance of 5 Ohms, then Ohm's law can be used to find the voltage. Ohm's law states that the voltage is equal to the product of current and resistance (V=IR). In this case the voltage is equal to 3.6 Amps x 5 Ohms = 18.0 Volts. The law can also be used with the rearranged equation to obtain current or resistance. 
3 0
3 years ago
( TRUE false )
Alex73 [517]

Answer:

number 6 is wrong

the answer is pesticides

2.combines are used for harvesting or threshing.so number <em>2</em><em> </em><em>is</em><em> </em><em>w</em><em>rong</em>

at least you tried

Explanation:

there is no such thing as <em>weedicides</em>

8 0
3 years ago
Read 2 more answers
The effect of mechanical work on an object is _. (complete the sentence.)
Advocard [28]

Answer:

Displacement (i.e. change in its final position)

Explanation:

In classical mechanics work is described as the displacement of the body in the direction of the applied force.

<u>Mathematically given as:</u>

W=F.s\ cos\ \theta

where:

F = force on the body

s = displacement of the body

θ = angle between the force and direction of displacement

While force, acceleration, velocity can also be the answer for the blank space but the displacement effect is visible during and even after the work has been done, so one can notice the change in position of the object even when the person has not seen the process but just the initial condition of the body.

8 0
3 years ago
Compare and contrast electric conductors and electric insulators. Give an example of each.
8090 [49]

Answer:

conductor:-

A substance that allows heat to pass through them is known as a conductor.

Example:-All the metals, water, etc.

Insulator:-

A substance that does not allows heat to pass through them is known as an insulator.

Example:-All the nonmetals etc.

Explanation:

4 0
2 years ago
Read 2 more answers
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