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An lady bug walks 20.0 cm in a direction of 30.00 North of East. She then turns and walks 30.0 cm North, turns and walks 10.0 cm West. How far is the lady bug from where she started.
A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal THREE TIMES her weig
A wire of cross-sectional area 5.00*10^-6 m^2 has a resistance of 1.75 Ohms. What is the resistance of a wire of the same material and length as the first wire, but with cross-sectional area of 8.75
A touches B, then the two spheres are separated. B touches C, then those spheres are separated. Finally, C touches A and those two spheres are separated. How much charge is on each sphere?
The highest barrier that a projectile can clear is 13.5 m, when the projectile is launched at an angle of 15.0 degrees above the horizontal. What is the projectiles launch speed?
A positive charge of 4.40 uC is fixed in place. From a distance of 3.00 cm a particle of mass 6.70 g and charge +3.20 uC is fired with an initial speed of 80.0 m/s directly toward the fixed charge.
A small map shows New York to be 486 miles in a direction 8° north of east from Columbus. The same map shows that Buffalo is 302 miles in a direction 56° west of north from New York. Assume
A diffraction grating is illuminated with light if wavelength 500nm. It produces the first minimum at 45 degree. Find the number of lines(slits) per mm of diffraction grating.
Look up the definition of diopter and use it to calculate the power of the converging lens you used in this experiment. What kind of visual problems can be helped with converging lenses?
The total liftoff mass of the space shuttle orbiter is 110,00kg. The combined thrust of the three on board liquid fuel engines and two solid fuel boosters is 34.5 million N. Theoretically what is th
If the coefficient of volume expansion of mercury is = 1.80×10-4 , compute, the coefficient of volume expansion of the glass.
write an expression for the net electric flux through the entire surface area in terms of the area vectors and the electric field. (Hint: use the vector definition for the electric flux found in tut
(a) How far beyond the traffic signal will the automobile overtake the truck? (b) How fast will the automobile be traveling at that instant?
An advertisement claims that a particular automobile can "stop on a dime". What net force would actually be necessary to stop an automobile of mass 910kg traveling initially at a speed of 37.0km/h i
A constant horizontal force of 20N is applied to block A (4.0kg) which is pushed against block B (6.0kg). The blocks slide over a surface, along the x-axis. What is the force from block A on block
You chose a an arbitary point to begin measuring the postion of the falling object. How fast was it going at the point you designated t=0?
Solar cells can produce about 40 W of electricity per square meter of surface area if directly facing the Sun. How large an area is required to supply the needs of a house that requires 22 kWh/day?
At what angle must you swim (measured from the eastward bank) in order to reach the opposite bank at the exact time that your friend reaches the same spot?
If, in the course of an hour, the frog spends 32% of the time resting and 68% of the time performing identical jumps of that maximum length, in a straight line, what is the distance traveled by the
Find the horizontal component of the book's velocity, just before the book reaches the floor. Find the magnitude of book's velocity, just before the book reaches the floor.
A quarterback claims that he can throw the football a horizontal distance of 183m (200 yd). He claims that he can do this by launching the ball at the relatively low angle of 30 degrees above the ho
What was the direction of the mug's velocity just before it hit the floor? (below the horizontal)
(a) What is the ratio of the final charge on sphere C to q? (b) What is the ratio of the final total charge on the three spheres to q?
A basket ball player is 10.0 m from the basket. The height of the basket is 3.05 m. If he shoots the ball at an angle of 51.3 degrees with the horizontal from a height of 1.99 m at what speed must h
A skateboarder, starting from rest, rolls down a 12.0 m ramp. When she arrives at the bottom of the ramp her speed is 7.70 m/s. Her acceleration is assumed to be constant. If the ramp is inclined at