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First, what is the error in my measurement of 18 rotations?(For the number use two digits to the right of the decimal point.
A 890kg electric car uses a 270V battery pack. As the car accelerates from rest, 450C flows from the battery. What's the maximum speed the car can attain during this time?
How much work must be done to extract 1.5 J of heat from a reservoir at 7.0 deg C and transfer it to one at 26.0 deg C by means of a refrigerator using a Carnot cycle.
Tom the cat is chasing Jerry the mouse across the surface of a table 1.2 m above the floor. Jerry steps out of the way at the last second, and Tom slides off the edge of the table at a speed of 4.6
If the combined effect of air resistance and rolling friction causes a deceleration of 0.50m/s^2, after how long will the car come to rest?
Assume both strips were equally charged and the charge is located at the middle of the strip. Calculate an order of magnitude value for the number of excess electrons on one strip of tape. show calc
A flat surface having an area of 3.4 m^2 is rotated in a uniform electric field of magnitude E = 6.1e5 N/C.
In the sport of curling, large disks of granite are pushed on ice. When you push a curling stone with a force of 80N, it accelerates at 4 m/s^2. What is the mass of the curling stone? (assume there
(a) What is the electric potential at the origin? (b) What is the electric potential at the point on the z axis at z = a?
A proton accelerates from rest in a uniform electric field of 620 N/C. At some later time, its speed is 1.4e6 m/s. (a) Find the magnitude of the acceleration of the proton.
A river of width 32 m flows in a straight line (the x direction) with a speed of 0.25 m/s. A boat is rowed such that it travels directly across the river (along y). If the boat takes exactly 2.5 min
(a) If you compress the air trapped in the piston by pushing on the syringe's plunger with an average force of 2.0 N for a distance of 0.55 cm, how much mechanical work do you do on the gas? (b) Wh
An airplane has a velocity relative to the air of 194 m/s in a westerly direction. If the wind has a speed relative to the ground of 56 m/s directed to the north, what is the speed of the plane rela
When a resistor is connected to a 10V source, it draws a 185mA current. The same resistor connected to a 96V source draws a 1.10A current. What is the rate of Joule heating in this resistor in both
How many 103 W lightbulbs can you use in a 103 V circuit without tripping a 14 A circuit breaker? (The bulbs are connected in parallel, which means that the potential difference across each lightbul
A cyclotron accelerates two protons directly toward eachother, each with a speed of 850 km/s, measured relative to the earth. A.) Find the maximum electric force that these protons will exert on each
A ray of light strikes a flat block of glass (n = 1.50)of thickness 2.00 cm at an angle of 1/6 radian with the normal . Trace the light beam through the glass, and find the angles of incidence and r
Each vehicle maintains a constant velocity after reaching its cruising speed. By what maximum distance does the bicycle lead the car?
A 40 cm diameter loop is rotated in a uniform electric field until the position of maximum electric flux is found. The flux in that position is measured to be 5.1 105 N·m2/C. Calculate the el
What is the magnitude of the electric field 2 cm from the center of the surfaces? Answer in units of N/C.
A hammer thrower accelerates the hammer (mass = 7.30 kg) from rest within four full turns (revolutions) and releases it at a speed of 25.0 m/s. Assuming a uniform rate of increase in angular velocit
While in a third floor office building, you notice a ball moving straight upward just outside the window. It takes 0.17 s for the ball to move up a distance of 1.00 m from the bottom to the top of
A 12-in record is dropped on a large 12-in phonograph turntable that is freely turning at 37 rev/min. The mass of the record is 63 g and the mass of the turntable is 1.19 kg. What is the final speed
A toy airplane moves at the end of a string about a fixed point in a horizontal circle of 1.02-m radius. If the linear speed is 8.7 m/s, what will the speed become if the string is pulled up to give
A 180 kg horizontal beam is supported at each end. A 295 kg piano rests a quarter of the way from one end. What is the vertical force on the support closest to the piano?