What frequency of sound has a wavelength of 75cm?

A boat of mass 115 kg drifts along a river at a speed of 13 m/s to the east. What impulse is required to decrease the speed of the boat to 10 m/s to the east?

The substance coming out of a reaction is called the reactant. True or False?

Which of the following equations is balanced correctly? A. 3 H2O → H2 + 3 O2 B. Cl2 + 2 KBr → KCl + Br2 C. 2 C2H2 + 5 O2 → 4 CO2 + 2 H2O D. 2 C3H3 + O2 → 2 CO2 + H2O

Conduction transfers Thermal energy by

How is force proportional to mass?

How much work is done by a 460 N force acting over a distance of 20.0m?

When two of the three variables are known the wave equation can be used to determine what

Find the total positive charge of all the proton in 5gm of water

Vector A has components Ax=1.30cm, Ay = 2.25cm; vector B has components Bx=4.10cm, By=-3.75cm. Find a. the components of the vector sum A+B; b. the magnitude and direction of vector A+B; c. the components of the vector difference B-A; d.

It takes 26.5 N to just pull a 72 kg sled across snow. What is the coefficient of friction?