An air bubble has a volume of {v} cm3 when it is released by…

An air bubble has a volume of {v} cm3 when it is released by a submarine {h} m below the surface of a lake. What is the volume of the bubble (in cm3) when it reaches the surface? Assume the temperature and the number of air molecules in the bubble remain constant during its ascent.

For a physics experiment, a solid cube is suspended from a s…

For a physics experiment, a solid cube is suspended from a spring scale. The gravitational force exerted on the cube is 0.714 N as measured when the object is suspended from a spring scale. When the suspended cube is submerged in water (ρ = 1000 kg/m3), the scale reads 0.450 N.   What is the mass of the object in grams?  Enter unit as “g”.

In target practice, a thick board stops a bullet at a penetr…

In target practice, a thick board stops a bullet at a penetration depth of {d} cm.  If the same bullet hits another thinner board of 2.90 cm thick and made by the same material (assuming the same average frictional force), what is the speed of the bullet, in m/s, as it emerges from the thinner board?  Please enter your unit as “m/s”. \

A force is applied along the x-direction on a 5.0 kg object….

A force is applied along the x-direction on a 5.0 kg object.  The force varies along its path as shown in the graph.   It lasts for {t} minute(s).  Find the average power, in Watt, the force delivered during that period.  Please enter your unit as “Watt”.  

A box of mass m = 10.0 kg moving at 0.500 m/s is pushed by a…

A box of mass m = 10.0 kg moving at 0.500 m/s is pushed by a force F = {F} N across a horizontal floor.  The applied force is directed at an angle θ = 60.0⁰ as shown in the drawing.  The coefficients of static and kinetic friction between the box and the floor are μs=0.400 and μk=0.300, respectively.  What is the work done by the force F after moving the box a distance of d = 10.0 m in joules?  Please enter your unit as “J”.