An airplane flies at 100km/h in still air. If it flies into a 10 km/h headwind, its groundspeed is

A) 100 km/h

B) 110 km/h

C) 120 km/h

D) 90 KM/h

Compare and contrast the terms melting and freezing

Which of the following transfers heat by electromagnetic waves? a. radiation b. conduction c. convection d. temperature

Which of keplers laws says that planets travel in elliptical paths around the sun

In still water, a boat averages 18 18 miles per hour. it takes the same amount of time to travel 16 miles 16 miles downstream, with the current, as it does 8 8 miles upstream, against the current. what is the rate of the water's current?

What is carnot engine. express the relation for its efficiency?

Which of the following describes a characteristic of a series circuit? There is more than one path for the electrons to take. There is at least one power source and at least one receiver. All parts of the circuit are connected one after the next.

If you push against a stationary brick wall for several minutes, you do no work A. on the wall. B. at all. C. Both of the above. D. None of the above.

Awave is traveling through X. What can be known about X? It is empty space. It is any medium. It is a solid It is a liquid.

Who wrote the mayflower compact?

In the formula for specific heat, which quantity is measured in units of J/g•°C? a - c b - Q c - T d - m