Answer:
(a) Power= 207.97 kW
(b) Range= 5768.6 meter
Explanation:
Given,
Mass of bullet,
Kinetic energy imparted,
Length of rifle barrel,
(a)
Let the speed of bullet when it leaves the barrel is .
Kinetic energy,
Initial speed of bullet,
The average speed in the barrel,
Time taken by bullet to cross the barrel,
Power,
(b)
In projectile motion,
Maximum height,
Range,
given that,
then,
Answer:
(a)7.48331 Km
(b) Directly above the tomb
(c) 12.53 degrees
Explanation:
Given that the distance is 3.5 Km, converted to meters we obtain 3500 m
Using the formula
where s is the distance and t is time, taking acceleration due to gravity as 9.8 then
t = 26.72 sec
We know that speed=distance/time hence to get the distance in part (a)
Distance=Speed*time
280 *26.72 = 7483.31 m converted to Km we obtain 7.48331 Km
(b)directly above the bomb
(c)
Answer:
radian
Explanation:
We are given that
Wavelength=
We have to find the phase difference when the wavelength is equal to half of the initial wavelength.
Path difference=
For interference
Phase difference=
Substitute the value
Phase difference=
Phase difference= radian
The law of equal areas suggests that planets move fastest when at "perihelion" at slowest when at the "aphelion." Perihelion refers to the point at a planet's orbit, comet or asteroid where it is closest to the sun. Aphelion <span>refers to the point at a planet's orbit, comet or asteroid where it is furthest to the sun.</span>