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A new planet which has ten times the mass of the Earth and four times the radius.
a) What is the acceleration due to gravity on this planet?
While on the surface of this planet, an astronaut proceeds to hit a golf ball towards the new planet. The ball has a mass of 0.25 kg on earth, and leaves the ground with a speed of 20 m/s at an angle of 30 degrees up from the horizontal.
b) What is the mass of the golf ball on this planet?
c) What is the wieght of the golf ball on this planet?
d) How much time will the ball spend in the air before returning to the ground?
e) How far from the astronaut will the ball land?
A string with a length of 2 m resonates in three loops as shown above. The string linear density is 0.05 kg/m and the suspended mass is 1.5 kg. What is the frequency of oscillations
A portable electric heater uses 22 A of current. The manufacturer recommends that an extension cord attached to the heater, What is the smallest radius of copper wire that can be used in the extension cord
You're burning calories by weight lifting. You lift a 65kg barbell 1.7m, and repeat 10 times. How much energy in do you expend
A coaxial cable has a capacitance of 3.0 pF. The inner conductor has a radius of 1.0 mm, Find the length of the cable
What must the charge (sign and magnitude) of a particle of mass 1.42g be for it to remain stationary when placed in a downward-directed electric field of magnitude 610N/C ? Use 9.81m/s^2 for the magnitude
Three 3 uC charges are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 uC charge. Find the electric field at the center of the square
A projectile is fired at v0 = 381.0 m/s at an angle of ? = 65.7o with respect to the horizontal, How far will the projectile travel in the horizontal direction, R
A mass m = 90 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 18.8 m and finally the flat straight section at the same height as the center of the loop (18.8 m off the ground). Because the mass would not..
A particle of charge +3.0 x 10-8 is in a unifromelectric field directed to the left. It is released from rest andmoves a distance of 5.0 cm and its kinetic energy is increased by+4.5 x -4 J.
the specific heat of aluminum is .215 calories per gram per degree celcius. calculate the amount of heath required to raise the temperature
There is an electric field of 113N/C directed along the + x axis. If the string makes an angle 26 degrees with the y axis when the sphere is in stability, what is the charge on the sphere.
A 1.3-kg 16-cm-diameter solid sphere is rotating about its diameter at 69 rev/min. what is the new angular speed of the ball
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