Answer:
The temperature and volume of a gas are directly proportional when pressure is constant.
Explanation:
Charles's Law was proposed by a French chemist, Jacques Charles. The law states that "The volume of a fixed mass of a gas varies directly as its absolute temperature if the pressure is constant".
The law shows the relationship between volume and temperature at a constant temperature. It is mathematically expressed as:
V∝T(P,n constant)
Answer:
1.Ultrasound is a mechanical wave
2.Ultrasounds are sound waves having a frequency above 20,000Hz
3.ltrasound is not included in the electromagnetic spectrum
4.An ultrasound scan uses high-frequency sound waves to create images of the inside of the body
5.Therapeutic ultrasound has no known harmful effects when done right by your therapist
Answer:
6logs
Explanation:f
First finding the volume of the logs
V= π/4d²l
= 0.098m³
So number of logs will be
Weight of 2 boys + weight of log = buoyancy force.
So
2( 400)+ N ( Mlog x g) = density of water x volume displaced x g
2(400) = N x 0.098x 1000x 9.8 x 0.9- 0.75* 1000
N= 5.5 which is approx 6logs
Answer:
t=0.58s
Explanation:
We can consider only the horizontal component since the horizontal component of the velocity is constant (), and we want to know how much time it takes for the balloon to travel a horizontal distance at that speed. The definition of (horizontal) velocity is , so we have:
When the speed of the car increases by 13.3 percent, the breaking distance increases by 13.3 percent as well.
<h3>
Increase in the distance of the car</h3>
The increase in the distance of the car is calculated as follows;
v = d/t
where;
- d is distance
- t is time
- v is speed
Distance and speed are directly proportional, thus, when the speed of the car increases by 13.3 percent, the breaking distance increases by 13.3 percent as well.
Learn more about distance here: brainly.com/question/4931057
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