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Reptile [31]
3 years ago
9

A 0.50 kg rubber ball has a speed of 1.90 m/s at point a and kinetic energy of 8.9 j at point

Physics
1 answer:
Art [367]3 years ago
3 0
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Where an electric field line crosses an equipotential surface, the angle between the field line and the equipotential is
n200080 [17]

Answer:

90 degree

Explanation:

Electric field line is vertical to the electric field line.

4 0
2 years ago
Please solve it asap ty!
vodomira [7]

Answer:

thanks for the five points

8 0
3 years ago
For a submarine, identify when it will have the GREATEST buoyant force acting on it. Assume that neither the volume of the subma
lidiya [134]

Answer: a, c, and g

Explanation:

Buoyant Force is an upward force acting on submerged object equal to weight of fluid displaced by the submerged object.

If no part is submerged (V = 0) that is volume. Therefore there is Zero Buoyant Force.

Fully submerged produces greatest buoyant force since greatest amount of fluid was displaced.

Whenever it is fully submerged it will have the greatest buoyant force.

Buoyant Force DOES NOT Depend on Depth

A fully submerged object displaces its volume in fluid

A floating object displaces its weight in fluid.

6 0
3 years ago
a kid on a playground swing makes 6 complete to-and-from swings each 30 seconds (a) the frequency of the swinging is? (b) the pe
Mariana [72]

The frequency is how many per second:

       (6 swings)/(30 sec) = (6/30) swing/sec = 0.2 per sec = 0.2 Hz .

The period is how long each one takes, or seconds per swing.
It's exactly the flip of frequency.
So we could just take the frequency, flip it, and find   1 / 0.2 ,
but let's do it the long way:

      (30 sec) / (6 swings) = (30/6) sec/swing =  5 seconds  .  

      
4 0
3 years ago
Read 2 more answers
A light ray in air enters and passes through a block of glass. What can be stated with regard to its speed after it emerges from
Alik [6]

Answer:

Speed is same as that before it entered glass.

Explanation:

Given:

A light ray enters and passes through the glass as shown in the diagram.

We have to analyze its speed.

Speed of light in air is 3\times 10^8\ ms^-^1 and speed of light in glass is 2.25\times 10^8\ ms^-^1

Whenever a light ray enters a glass block or slab there is bending of light at the interface of the two media.

So speed of light will decrease in glass medium and again it passes to the air.

So

Speed of light in air will again increase or will be equivalent to the earlier speed when it was entering the glass block.

Finally

Speed is same as that before it entered glass as it in the same medium (air).

6 0
3 years ago
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