How much power is generated as a crane lifts a 65 kg ball to a height of 150 m in 11.3 seconds

The overall force on an object after all the forces are added together is called what

What is a difference between research in the field and in the laboratory

Do all types of waves need a medium to travel through

In physics it is important to use mathematical approximations. Demonstrate that for small angles (< 20°) the following relationship is true where α is in radians and α' is in degrees.

Technician A says that a good relay should measure between 60 ohms and 100 ohms across the coil terminals. Technician B says that OL should be displayed on an ohmmeter when touching terminals 30 and 87. Which technician is correct?

Mark has brown hair. His wife, Maggie, also has brown hair. Mark and Maggie have four children. Three children have brown hair, and one child has blonde hair. What is the most likely explanation for this?

The current in a hair dryer measures 15 amps. The resistance of the hair dryer is 11 ohms. What is the voltage?

Long cylindrical steel rods (rho = 7833 kg/m3 and cp = 0.465 kJ/kg·°C) of 8 cm diameter are heat-treated by drawing them at a velocity of 2 m/min through an oven maintained at 900°C.

Which component is used to measure the current in a circuit

A 7.1 resistor and a 4.8 resistor are connected in series with a battery. the potential difference across the 4.8 resistor is measured as 12 v. find the potential difference across the battery. v