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The angular size of Mercury crater observed with the Earth ground telescope is .11 arc seconds. Calculate the diameter of this crater D (in km) and its are S (in km^2). At the moment of observation, the distance d between the Earth and Mercury was d= 1.3 AU.
A group of physics students are conducting an experiment in projectile motion. They want to launch a ball into a bucket that is 8 meter away from their spring loaded launcher. Find the time of flight for the ball in their experiment
A person having a sking surface area of 1.85 m2 and the temperature of 30.0 C is resting in an insulated room where the ambient air temperature is 20.0 C. By how much does a person change the entropy of the air in this room each second
Find out the recoil velocity that the raft. At what height above the cannon should the net be placed in order to catch the daredevil.
Two very small objects, whose charges are +1.0 and -1.0 C, Find the magnitude of the attractive force that either charge exerts on the other
At its highest temperature, a space heater has a resistance of 31.5 ? when it is plugged into a wall outlet supplying a peak voltage of 169.7 V sinusoidally at 60 Hz
Some of the earliest atomic models held that the orbital velocity of an electron in an atom could be correlated by the radius of the atom. If the radius of the hydrogen atom is 5.29*10-11 m and the electrostatic force is responsible for the circular ..
The magnetic field of an electromagnetic wave in a vacuum is B_ z = ( 4.0mu T )sin( 1.0×107 x - 2 pi f t) , where x is in m and t is in s. what is the wave's electric field amplitude
What is the resistance of a 1.7m -long copper wire that is 0.50mm in diameter? (Answer should be in ohms)
A projectile is fired up into the air at a speed of 166 m/s at an angle of 38° relative to the horizontal. Decide the MAXIMUM HEIGHT the projectile will reach.
A 300 keV photon is scattered at an angle of 30 degrees during a Compton interaction. What are the energies of the scattered photon and the Compton electron
An m = 6.60-kg clay ball is thrown directly against a perpendicular brick wall at a velocity of 22.0 m/s and shatters into three pieces, which all fly backward, as shown in the figure. The wall exerts a force on the ball of 2630 N for 0.110 s.
A well-insulated electric water heater warms119kg of water from 20.0° C to47.0° C in33.0min. Find the resistance of its heating element
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