A child on a playground swing makes a complete to-and-fro swing each two seconds. the frequency of the swing is

Cold water (cp = 4180 J/kg·K) leading to a shower enters a thinwalled double-pipe counterflow heat exchanger at 15°C at a rate of 1.25 kg/s and is heated to 60°C by hot water (cp = 4190 J/kg·K) that enters at 100°C at a rate of 4 kg/s.

When completely filled with water, the beaker and its contents have a total mass of 326.75 g. What volume does the beaker hold? Use?=1.00 g/mL as the density of water.

Which term describes an advantage of wind energy? A. Expensive B. Nonrenewable C. Unreliable D. Abundant

Which of the following is one part of a chemical formula? A number that shows the total atomic mass of the substance The full name of each element shown The symbol of each element in the substance A number that shows the total number of chemical

Discuss the difference between waveform graphs and vibration graphs

The personal cost per smoker per year is estimated to be $2,500.

A tight rope walker traverses a wire with the aid of a balancing pole. The moment of inertia of the person about their COG (Iperson) is 15 kg m^2. The moment of inertia of the pole about its COG (Ipole) is 250 kg m^2.

If ta battery on a circuit is a 9-volt battery, each light on the circuit gets what

When a positive charge moves in the direction of the electric field, what happens to the electrical potential energy associated with the charge? A. It increases. B. It decreases. C. It remains the same. D. It sharply increases, and then decreases.

Electrons flow in the wire from a (n) terminal to a (n) terminal