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Q. An object placed on an equal-arm balance scale requires 12 kg to balance it. When ths object is placed on a spring scale, the spring scale reads 12 kg. What would be the readings of this object of the balance scale and the spring scale (respectively) on the moon? (The acceleration due to gravity on the moon is 1/6th that of Earth's.)
Q. How strong is the electric field between the plates of a 0.70 air-gap capacitor if they are 2.0 apart and each has a charge of 68.
What is the amplitude of the oscillations . Could you think of a simple method for determining the focal length of a converging lens.
A 550 N physics student stands on a bathroom scale in an elevator. As the elevator starts moving, the scale reads 450N. (a) Find the acceleration of the elevator. Find the mass of the worker.
What is t he steam-side coefficient
In fact, the increased normal force at these large angles makes force of friction too large to move the lawnmower at all.
Much of the material making up Saturn's rings is in the form of tiny dust grains having radii on the order of 10-6 m. These grains are located in a region containing a dilute ionized gas, and they pick up excess electrons. As an approximation, sup..
The concrete encloses one steel reinforcing rod with cross-sectional area 1.00cm2. The rod joins two strong end plates. The cross-sectional area of the concrete perpendicular to the rod is 47.5 cm2. Young's modulus for the concrete is 3.00 x 10^10 N/..
A 0.34 kg iron horseshoe that is initially at 616 ?C is dropped into a bucket containing 25 kg of water at 28 ?C. What is the final equilibrium temperature? Avoid any energy transfer to or from the surroundings and assume the specific heat of iron is..
An airplane is flying with a velocity of 91at an angle of 26 above the horizontal. When the plane is a distance 107 directly above a dog that is standing on level ground, a suitcase drops out of luggage compartment.
A flight attendant pulls her 61N flight bag a distance of 279m along a level airport floor at a constant velocity. The force she exerts is 41N at the angle of 50° above the horizontal.
A torque of 60 Nm producing a counterclockwise rotation is applied to the wheel about its axle. A frictional torque of 10 nm acts at the axle.If the wheel is observed to accelerate at the rate of 2rad/s2 under the influence of these torques, what i..
A hunter aims directly at a target (on the same level) 101m away. If the bullet leaves the gun at a velocity of 203m/s, by how much will it miss the target.
A 1.5 {rm kg} block rests on top of a 7.5 {rm kg} block. The cord and pulley have negligible mass, and there is no significant friction anywhere. What force F should be applied to bottom block so the top block accelerates to the right at 2.60 m/s^..
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