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Consider two masses m1 and m2 at the top of two frictionless inclined planes. Both masses start from rest at the same height.
The coefficient of static and kinetic frictions between a 3 kg box and a desk are .4 and .3 respectively. What is the net force on the box when a 10 N horizontal force is applied to the box?
What are the components of the gravitational force along the axes normal and tangential to the inclined ramp? Draw the force vector diagram, labeling all your angles and forces.
The 500[m] Short Track speed skating Olympic world record is 39:937[sec] held by American JR Celski. Calculate JR's average speed in [miles=hr] during his record- setting performance.
Assuming the train can accelerate to its fastest speed in 5[s], determine the average acceleration in [m=s2] and g's Research how many g's the human body can experience prior to passing out, and det
The tube contains mercury with a density of 13600 kg/m3. Calculate both absolute and relative pressure on the bottom of the tank if the meniscus (mercury surface) of the leg opening in the open air
When a charged particle moves at an angle of 20° with respect to a magnetic field, it experiences a magnetic force of magnitude F. At what angle (less than 90°) with respect to this field wi
What must be the radius of a circular loop of wire so the magnetic field at its center is 1.40 10-4 T when the loop carries a current of 17 A?
A square coil of wire containing a single turn is placed in a uniform 0.30 T magnetic field, as the drawing shows. Each side has a length of 0.38 m, and the current in the coil is 12 A. Determine th
Two capacitors are connected in parallel across the terminals of a battery. One has a capacitance of 2.0 µF and the other a capacitance of 4.0 µF. These two capacitors together store 4.5
A double slit is illuminated with monochromatic light of wavelength 500nm. The m=1 bright fringe is located 2.0 cm from the centerline. The interference pattern is observed on a screen located 4.0
A 25g bullet pierces a sand bag 27cm thick. If the initial bullet velocity was 64 m/s and it emerged from the sandbag with 35m/s, what is the magnitude of the friction force (assuming it to be const
The work done by an electric force in moving a charge from point A to point B is 2.52 10-3 J. The electric potential difference between the two points is VA ? VB = 42.0 V. What is the charge?
What formula do I use to find electric potential? Units? What formula do I use to find potential energy? Units? If you can give an example with three point charges on an equilateral triangle that wo
The first place is 4.00 cm to the left of the negative charge. The second place is 7.00 cm to the right of the negative charge. What is the distance between the charges?
A hockey puck has a mass of 0.116 kg and is at rest. A hockey player makes a shot, exerting a constant force of 27.5 N on the puck for 0.16 s. With what speed does it head toward the goal?
hildren are playing on a vertical slide that is 10m high. If humps were added to this slide, but the height remained constant, how would this effect the final speed?
In coming to a stop, a car leaves skid marks 76 m long on the highway. Assuming a deceleration of 6.50 m/s2, estimate the speed of the car just before braking.
In order for a photon to eject an electron from a metal surface via the photoelectric effect, the photon's [choose the best answer]
The building's roof is 28.0 m above the level ground. (a) At what time does the ball hit the ground? (b) At what horizontal distance does the ball hit the ground?
Then you turn back around and hurry on to class. If your speed is a constant 0.95 m/s as you are walking (both directions), what is your average velocity from the time you leave Dale Hall to the tim
A mass is trapped on the x-axis. Its potential energy is given by U=-2x^3 -3x^2 +12x. Where x is i meters and U is in joules. A) Determine an expression for the force that acts on the mass as a functi
If 61.5 L of oxygen at 18C and an absolute pressure of 2.45 atm are compressed to 48.8L and at the same time the temperature is raised to 56 degrees C, what will the new pressure be?
Calculate (a) the partial pressure of nitrogen and (b) the mole fraction of each gas in the original mixture.
Find the pressure exerted on the floor by each leg. The acceleration of gravity is 9.8 m/s2 .