Men in the age of 18-34 years need to be able to run a marathon in 3 hours and 10 minutes to qualify for the Boston Marathon. How many seconds is this? Show your work.

If the electric flux through a circular area is 5.0 Nm2/C, what is the electric flux through a circle of double the diameter assuming the orientations of the circles are the same and the electric field is uniform?

If 1 meter = 3.28 feet, what is the height of the Washington Monument in meters?

What structure does light pass through after leaving the condenser in a compound light microscope?

You can make a smoothie in a blender with a power of 400 W and an efficiency of 85% how much energy is actually being used to make the smoothie in 30 seconds?

Why does the total amount of energy before and after any energy transformations remain the same? answer : Because energy cannot be created or destroyed, the total input is equal to the total output.

A gate in an irrigation canal is constructed in the form of a trapezoid 2 m wide at the bottom, 38 m wide at the top, and 2 m high. It is placed vertically in the canal so that the water just covers the gate.

A machine with a mechanical advantage of 10 is used to produce an output force of 250 newtons. What input force is applied to this machine

Why do you float in space

How does physical change affect the identity of a substance

A scientist pours grape juice on three identical white shirts He then uses three different cleaning products on the shirts and measures how clean they get what is the independent variable in this experiment