Other Physics Answers

A loaded gun is dropped on a frozen lake. The gun fires, with the bullet going horizontally in one direction and the gun sliding on the ice in the other direction. The bullet's mass is 0.03 kg, and

speed is 290 m/s. If the gun's mass is 2.1 kg, what is its speed (in m/s)?

X

m/s

25mE+10mE+mW

+20m N +26m N+6 m/s

A stone is attached to the end of an inelastic string and whirled in a circular part of radius 30cm, if the stone makes 9 revolution in 3 seconds find its period

A cylindrical container with a cross-sectional area of 70.2cm2 holds a fluid of density 796kg/m3. At the bottom of the container, their pressure is 117kpa. Assume pat=101kpa. what is the depth of the fluid? Find the pressure at the bottom Of the container after an additional 2.35×10^-3m³.

Determine the specific weight, density, and specific gravity of a liquid that occupies a volume of 200litres and weighs 178kg. Will the liquid float on the surface of oil of specific gravity (0.8) provides a result in S:I units

1. A belt of length 25 m runs on a wheel of radius 30 cm. The wheel coasts uniformly to rest from an initial speed of 2 rev s-1. Calculate the 

i)  number of revolutions the wheel turns before it stops.  

ii) angular acceleration of the wheel 

7. An anti aircraft missile is fired vertically upward from the earth’s surface with an initial

velocity of 500 m/s. Calculate:

(a) The maximum height it can reach.

(b) The time taken to reach that height.

(c) The velocity of the missile at t = 60 s.

(d) The time when it reaches the height of 10 km.

Three warehouse workers are moving a heavy crate from the warehouse to the truck. Looking at them from a top-down view, worker A pulls the box to the North with a force of 10N, worker B pulls the box to the West with a force of 17N, and worker C pulls the box to the South with a force of 20N. The box moves a total of 18m, 20° S of W with the force of the workers. What is the work done by Worker C?

a velocity of magnitude 40 m/s is directed at an angel of 40 east of north draw a vector on pepera to represent this velocity

The gravitational force between two interacting particles spaced 2 cm apart is 6x10^-6 N. What should be the mass of one particle if other particle has a mass of 9 kg?