The temperature of a blackbody can be estimated based on the wavelength of light that it is emitting. A star can be considered a blackbody. Find the surface temperature T of a star where a max = 685 nm.
T =
K

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?

What kind of simple machine is a catapult?