Sound moves at a speed of 340 m/sec. If an airplane is overhead at 8500m how long will it take for the sound to reach you

An air-filled parallel-plate capacitor has a capacitance of 1 pf. the plate separation is then doubled and a wax dielectric is inserted, completely filling the space between the plates. as a result, the capacitance becomes 2 pf.

How can 2 objects have different momentun but same mass

A hard material is easily scratched. True False

In the food chain 'grass - -> grasshopper - -> frog - -> snake - -> eagle ', what organism is the producer

The weather is warm and dry. Which change would a cold front bring?

Which organisms develop gills from pharyngeal arches and later develop lungs to breathe on land

How much energy (in joules) is required to evaporate 0.0005 kg of liquid ammonia to vapor at the same temperature?

It is 5.5 km from your home to the physics lab. As part of your physical fitness program, you could run that distance at 10 km/h (which uses up energy at the rate of 700 W), or you could walk it leisurely at 3.0 km/h (which uses energy at 290 W).

The largest volcanic structures on venus are called:

a block with a mass of 3 kg is swung on a cord in a horizontal circle with a radius of 2m. the speed of the block is 6m/s^. the magnitude of the acceleration of the block is most nearly