Physics Answers

A garden hose attached with a nozzle is used to fill a 7-gal bucket. The inner diameter of the hose is 1”, and it reduces to ½” at the nozzle exit. If it takes 32 s to fill the bucket with water, determine the average velocity of water at the nozzle exit

A moving airplane dropped a cargo (ignore the effect of air resistance). If the plane from which the cargo was dropped was flying at a height of 600 m, and the cargo lands 300 m horizontally from the initial dropping point,

a. how fast was the plane flying when the cargo was released? (Vix=?)

b. what was the velocity of the cargo right before it hit the ground? (Vfy=?)

Solve for time first using this equation: t= √ 2y/ay

c. Draw a figure or diagram that illustrates the given problem.

An moving airplane dropped a cargo (ignore the effect of air resistance). If the plane from which the cargo was dropped was flying at a height of 600m, and the cargo lands 300 m horizontally from the initial dropping point,

a. how fast was the plane flying when the bottle was released? (Vix=?)

b. what was the velocity of the bottle right before it hit the ground? (Vfy=?)

Solve for time first using this equation: t=√2y/ay

c. draw a figure or diagram that illustrates the given problem

The difference between the ice point and steam point in a liquid in glass thermometer is 30cm. What temperature is recorded when the mercury thread is 10cm above the ice point?

A "light-year" is the distance light (speed = 2.998 108 m/s)travels in one year.

(a) How many meters are there in 4.00 light-years? m

(b) An astronomical unit (AU) is the average distance from the Sun to Earth, 1.50 108 km. How many AU are there in 4.00light-year? AU

(c) What is the speed of light in AU/h? AU/h

A delivery man covers his assigned route by traveling 8m blocks West, 10.0m blocks North, and then 21m blocks East. Calculate his resultant displacement?

A man starts with an initial velocity of 3.50 m/s and accelerates for a distance of 205 m over 28.7s. What is the acceleration of the man?

A car starts from rest as accelerated uniformly at a rate of 2m/s^2 for 6s .it then maintains the constant speed for 30s,the breaks are then apllied and vehicle uniformly retands to rest in 5s .find the maximum speed reached at the total distance covered.

A tiny 0.8g ball carries a charge of magnitude 10μC. It is suspended by a thread in a

downward 500N/C electric field. What is the tension in the thread if the charge on the ball is

positive?

A parallel-plate capacitor has an area of 100 mm² and the plates are separated by 100 μm . If the capacitor contains paper between the plates, what is its capacitance