If a cup of coffee is at 90°C and a person with a body temperature of 36°C touches it, how will heat flow between them?

A. from the hand to the cup

B. from the cup to the hand

C. from the cup to the surrounding air

D. from the hand to surrounding air

What is the dimension of magnetic flux

Alice builds an electric motor by positioning an electromagnet between the poles of a permanent magnet. When the electromagnet turns, the current through it switches direction because its connections to the voltage source are reversed.

A charged particle A exerts a force of 2.65 N to the right on charged particle B when the particles are 13.8 mm apart. Particle B moves straight away from A to make the distance between them 19.0 mm. What vector force does particle B then exert on A

Find the rms speed of the molecules of a sample of n2 (diatomic nitrogen) gas at a temperature of 31.5°c.

In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0580 s, during which time it experiences an acceleration of 376 m/s2. The ball is launched at an angle of 59.9° above the ground.

Which of the following decreases the dissolving rate of a solid in water?

Why might a plant that normally grows in one environment not grow well in a different environment?

Cara menghitung daya dorong

Which rock is made mostly of dark, fine-grained silicate minerals, chiefly plagioclase feldspar and pyroxene, and magnetite?

What does the atomic number tell us about an atom of a certain element?