At what angle θ must the 630-lb force be applied in order that the resultant r of the two forces has a magnitude of 1520 lb? for this condition determine the angle β between r and the vertical.

An engine has an energy input of 125 J, and 35 J of that energy is transformed into useful energy. What is the efficiency of the engine?

Diffusion of water through a differentially permeable membrane is called

A car engine burns fuel and has moving parts. Sometimes, an engine can become too hot and overheat. What can prevent the engine from overheating?

Besides storage, what does a vacuole provide in a plant cell?

What are variable factors, experimental groups and control groups in an experiment?

What type of plate boundary would be found along the coast line near Japan's volcanic mountain ranges

When the current in a toroidal solenoid is changing at a rate of 0.0270 A/s, the magnitude of the induced emf is 12.5 mV. When the current equals 1.30 A, the average flux through each turn of the solenoid is 0.00245 Wb.

A spring tide can occur at what day and month?

For a given launch velocity, at which launch angle does the projectile undergo the maximum horizontal displacement

Electric force is blank proportional to the amount of charge and blank proportional to the square of the distance between the charges