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a loaded cart has a total mass of 227kg.if a 312n force acting at an angle of 30degree to the ground is applied. how much work is done in moving the cart 15meters?
define How fast is the osprey approaching. Two of the fragments move with the same speed right after the explosion as the entire projectile had just before the explosion.
A charge Q = 23.0 ?C is distributed evenly on a wire bent into an arc of radius R = 47.0 cm, What is the electric field at the center of the arc that subtends ? = ±40.0°
The yellow light from a helium discharge tube has a wavelength of 587.5 nm. Calculate the number of lines per centimeter on the grating
A cylinder of mass 250 kg and radius 2.60 m is rotating at 4.00 rad/s on a frictionless surface when two more identical non-rotating cylinders fall on top of the first. What is this final angular velocity
If you supply 1950J of heat to 3.00moles of an ideal diatomic gas initially at 27.0 Celsius in a perfectly rigid container
A 4.1×104 locomotive, with steel wheels, is traveling at 7.0 on steel rails when its engine and brakes both fail. How far will the locomotive roll before it comes to a stop
A curve of radius 152 m is banked at an angle of 11°. An 722-kg car negotiates the curve at 86 km/h without skidding. avoid the effects of air drag and rolling friction.
A 73-kg boy is surfing and catches a wave which gives him an initial speed of 1.6 m/s. How much nonconservative work was done on the boy
Find the wavelength of red light in glass if the index of refraction of glass is 1.66. Recall that the wavelength of red light in a vacuum is 700 nm
Three equal charges are placed at the corners of an equilateral triangle 0.50 m on a side. What are the magnitude of the force on each charge if the charges are each -4.5×10^-9 C?
The speed of sound in air at room temperature is 340 m/s. What is the frequency of a sound wave in air with wavelength 1.3 m
An unknown material has a normal melting/freezing point of -26.3 ° C, and the liquid phase has a specific heat capacity of 160 J/(kg · C °). What is the latent heat of fusion of the unknown material
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