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Vikki [24]
3 years ago
11

HURRY IM TIMED

Physics
1 answer:
Gwar [14]3 years ago
3 0

Answer:

By talking about something that interesto you’

sorry if wrong

Explanation:

You might be interested in
Which of the following statements are true? Check all that apply.
lidiya [134]

We have 6 levels and we will verify which of them is true.

<em>A ) Electric charge is conserved </em>

According to the conservation of charge, an electric charge can neither be created nor be destroyed.

Therefore this statement is TRUE.

<em>B ) A positive charge and negative charge attract each other</em>

According to the properties of charges, the opposite charges attract each other and similar charges repel each other

Therefore this statement is  TRUE

<em>C) Two positive charges attract each other.</em>

Using the previous law, we can observe that this statement is false, because equal charges repel each other.

Therefore this statement is FALSE.

<em>D ) Two negative charges repel each other.</em>

Using the same principle as the two previous statements, two equal charges repel each other.

Therefore this statement is TRUE

<em>E) Electric charge is quantized.</em>

According to the quantization of charge, charges can take values only in integral multiples of a fundamental unit of charge.

Therefore this statement is TRUE.

<em>F) A neutral object contains no charge.</em>

A neutral object contains equal amount of negative and positive charge. Thus, in totality a neutral object contains no charge.

Therefore this statement is TRUE.

8 0
3 years ago
A car moving 20 km/h skids 30 m with locked brakes. how far will the car skid with locked breaks if it were traveling at 100 km/
Inessa05 [86]

Kinetic energy = (1/2) (mass) (speed)²

Since the 'speed' in the KE formula is squared, if the car's speed
increases by 5 times, its kinetic energy increases by (5²) = 25 times.

The loss of kinetic energy in a skid is just the wo0rk done by friction
between the tires and pavement.  So the skid distance is proportional
to the initial kinetic energy, and the car must skid 25 times as far when
it enters the skid at the higher speed.

         25 x 30m  =  750 meters
5 0
4 years ago
An object has a displacement of 45
Anika [276]

Answer:

45° to min.

1° ----> 60 min

45° ----> ?.

45 * 60

2700 min

<h3><u>2</u><u>7</u><u>0</u><u>0</u><u> </u><u>min</u></h3>
5 0
2 years ago
WILL GIVE BRAINLIEST!
Andrews [41]

<u>Order sequence of steps that are involved in the production of work by a four-stroke heat engine as follows: </u>

  • Piston moves down, allowing fuel-air mixture to enter intake valve
  • Piston moves up, compressing gas and causing gas to increase its temperature
  • Combustion as gas is still compressed; increase in energy from combustion pushes piston down
  • Piston moves up, pushing burned gases through exhaust valve: Spark plug fires, causing

Answer: Options D, A, C and B

<u>Explanation: </u>

There are four basic steps of a four stroke engine- Intake, Combustion, Power and Exhaust. The first step is the intake of air plus fuel mixture in the combustion chamber. At this time, the piston moves down. Now when the chamber is closed, the spark plug ignites fire which expands the fuel gases.

The gases push down, piston and crankshaft rotates in this way. Once the gases the combustion is done, there is plenty of space in the chamber that makes the piston moves up. In this way a complete cycle is completed and the crankshaft moves. That’s the working of this four stroke engines.

6 0
3 years ago
Read 2 more answers
A ball rolls 60 centimeters along a sidewalk in 5 seconds what is the speed of the ball.
meriva

Answer:

12 cm/s

Explanation:

Quite simply, you are looking for  cm/s

  so   60 cm / 5s   = 12 cm/s

6 0
2 years ago
Read 2 more answers
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