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An astronaut construct a pendulum with a length of 1 m on a new planet. If the period is 3.5 s, determine what is the acceleration due to gravity?
What is the rms speed of nitrogen molecules at a temperature of 37 oC? The mass of a nitrogen molecule is 4.680×10-26 kg
Calculate the maximum torque that can be applied to the pedals of a bicycle by a rider with a body mass of 74.0 kg, if the pedalarm is 20.0 cm long.
Use the worked example above to help you solve this problem. A woman weighs a fish with a spring scale attached to the ceiling of an elevator, What weight does the scale read
A person walks into a room that has two flat mirrors on opposite walls. The mirrors produce multiple images of the person. Consider only the images formed in the mirror on the left.
Cart A, with a mass of 2 kg, travels on a horizontal air-track at 3 m/s and hits cart B, what is the speed of the center of mass of the two-cart system
A charge of q = +7.50 µC is located in an electric field. The x and y components of the electric field are Ex = 4.80 103 N/C and Ey = 7.40 103 N/C, respectively. (a) What is the magnitude of the force on the charge? (b) Determine the angle that th..
a 800kg car pushes a 1900kg truck that has a dead battery. when the driver steps on the accelerator the drive wheels
A block weighing 60.0 N rests on a plane inclined at 25.0° to the horizontal. A force F is applied to the object at 44.0° to the horizontal, pushing it upward on the plane. The coefficients of static and kinetic friction between the block and the pla..
The construction of a flat rectangular roof (4.7m x5.3m) allows it to withstand a maximum net outward force of20007N. At what wind speed will this roof blow outward
a 150lb male athlete is running on a treadmill machine at a speed of 10mi/hr in a thermally insulated room. after one hour how much weight will the athlete lose
a projectile of mass 0.212kg is shot from a cannon. The end of the cannon barrel is at height 6.4m, the initial velocity of the projectile is 9.3m/s. How long does it take the projectile to hit the ground
A jogger travels a route that has two parts. The first is a displacement of 2.70 km due south, and the second involves a displacement that points due east.
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