Answer:
The radius of the loop is 20.66 km
Explanation:
let the radius of the loop be r
mass of airplane is m
At the top, the pilot experiences two radial forces, which are
1) Gravitational force is mg
2) Centrifugal forces mv²/r out of the center
When the pilot experiences no weight,
then, mg = mv²/r
r = v² / g
= 450² / 9.8
= 20.66 x 10³3
= 20.66 km
During the summer, the Northern Hemisphere of the Earth is angled toward the sun as the Earth revolves around the sun. During the winter, the Northern Hemisphere of the Earth is oriented away from the sun creating a shorter day and a longer night.
<span>240,000 miles / hour²
Average acceleration can be calculated by dividing the change in speed by the elapsed time. Since the dragster's speed was 0 when the light turned green, the change in speed is simply 300 mph. Now, divide that by the time:
300 mph / 0.00125 hours = 240,000 miles / hour²
By the way, 0.00125 hours is just 4.5 seconds!</span>
Answer:
check the explanation
Explanation:
To find density you need mass and volume
to find mass use a digital balance and record it. Ex - 50g
to find the volume of the object
use a measuring cylinder and lets say you fill it up to 50cm³
then add the irregular object to the cylinder and record the new volume Ex - 54cm³
to find the volume of the object subract the final volume from the intial volume
54cm³-50cm³=4cm³
now that you have mass and volume use the equation D=M/V
Density = <u> Mass </u> = <u>50g </u> = 12.5g/cm³<u>
</u> Volume 4cm³