A spring has a spring constant k = 7.85 N/m. If the spring is displaced 0.230m from its equilibrium position, what is the magnitude of the force that the spring exerts?

How does insulation in your home affect the transfer of thermal energy?

Orange Juice mass = 18 G Volume = ? Density 6 g / ML What is the Volume?

What force do you need to exert on the rope if you want to pull the box at constant speed?

What are some primary contributors to background radiation?

A projectile is fired at an upward angle of 29.7° from the top of a 108-m-high cliff with a speed of 130-m/s. What will be its speed (in m/s) when it strikes the ground below?

Which term refers to the process by which land is worn way by natural forces or human acticity?

A hungry 181 kg lion running northward at 71.0 km/hr attacks and holds onto a 38.6 kg Thomson's gazelle running eastward at 63.8 km/hr. Find the final speed of the lion-gazelle system immediately after the attack.

An apple falls from an apple tree growing on a 20o slope. the apple hits the ground with an impact velocity of 8 m/s straight downward. what is the component of the apple's impact velocity parallel to the surface of the slope?

A 140 g ball at the end of a string is revolving uniformly in a horizontal circle of radius 0.537 m. The ball makes 2.27 revolutions in a second. What is its centripetal acceleration?

A 32kg kid on a sled sliding over some rough snow is acted on by a frictional force which reduces its velocity form 8.5 m/s to 4.1 m/s in 3.0 seconds what is the magnitude of the frictional force?