A 750 Watt hairdryer is used for 15 minutes. Calculate the Kwhr used.

A weightlifter is holding a 200-kg barbell at a height of 1 meter above the ground How much work is he performing? Joules

Milk containing 3.7% fat and 12.8% total solids is to be evaporated to produce a product containing 7.9% fat.

A thermocouple thermometer is connected to a millivoltmeter which can read up to 10mV. When one junction is in ice at 0°C and the other is steam at 100°C, the millivoltmeter reads 4mV.

What makes music different from noise? A. the way the sound waves combine B. the variety of the different pitches C. the loudness of the sound D. the intensity of the sound

If you do 500 joules of work using a force of 50 Newton's, over what distance was the work accomplished

Why do atoms move at different speeds depending on wether they are liquids or solids

What are the arrangement of resistors in series

A cell provides 6 V to an LDR. The current through this LDR is measured and is found to be 3 A. What is the resistance of the LDR?

A car travels along eastward with a constant velocity. the magnitude of the acceleration of the car is

What is the weight of a 65 kg astronaut on mars?