What kinds of telescopes are used to measure parallax

3. You drop an egg out of your 10 m 2nd story window. If it took 1.43 sec, calculate the velocity right before the egg hits the ground. 4. You are walking at a speed of 1.5 m/sec. You see your friend up ahead 10 m in front of you.

The peak wavelength for the blackbody curve a star is in the UV range assuming the radiation from the star can reach earth would you be able to see it yes or no

If you were able to measure the motion of all particles of a sample and you used this data to find the average you would actually be measuring what

When coal is burned energy is being converted to. energy

Suppose V = 24 V, I = 0.1 A, mw = 46 gm, cw = 4.18 J/g∘K, mr = 8 g, and cr = 3.7 J/g∘K. If the water is initially at room temperature, how long will it take for the water to heat up 2 K? (Hint: dT/dt is approximately equal to ΔT/Δt.)

How would the moon appear from earth if the moon did not rotate?

Block B has mass 4.00 kg and sits at rest on a horizontal, frictionless surface. Block A has mass 2.00 kg and sits at rest on top of block B. The coefficient of static friction between the two blocks is 0.400.

T=2π√ (l/g) is dimensionally correct

A penny falls from a windowsill which is 25.0 m above the sidewalk. How much time does a passerby on the sidewalk below have to move out of the way before the penny hits the ground?

Show that the Newton has the units of mass times acceleration.