How long does it take the Sun to melt a block of ice at 0∘C with a flat horizontal area 1.0 m2 and thickness 2.0 cm? Assume that the Sun's rays make an angle of 30 ∘ with the vertical and that the emissivity of ice is 0.050.

a beaker has mass of 125 g. what is the mass of liquid if the beaker plus liquid have a mass of 232 g?

A titanium cube contains 3.5 * 1023 atoms. the density of titanium is 4.50 g/cm3 part a what is the edge length of the cube?

A radio controlled car rolls 10 m south, then reverse direction and rolls 8m north. The car has traveled a distance of 18 m and has a displacement of m south

What is a temporary magnet

Which moon phase occurs when the entire surface of the moon facing earth is illuminated?

You measure the magnetic field of a long, current-carrying wire to be B is equal to start fraction 50 times mu naught over pi end fraction at a distance of r = 7.5 cm. How much current is running through the wire?

In any food chain or web, the original source of energy is

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).