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In amusement park ride magic mountain superman, powerful magnets accelerate a car rides rest 45 m/s (about 100 mi/h) a time 7.0 s. The mass car rides 5.5 times 10^3 kg. Find average net force exerte
A 2.20 kg stone thrown upward from the ground at 10.0m/s returns to the ground in 8.00; the circumference of Mongo at the equator is and 1.80 × 10^5 km; and there is no appreciable atmosphere
If the pressure of the 3.0-cm3 volume is reduced to 1.0 x 10-11 Pa (an extremely good vacuum) while the temperature remains constant, how many moles of gas remain in the container?
A tank having a volume of 0.100 m3 contains helium gas at 140 atm. How many balloons can the tank blow up if each filled balloon is a sphere 0.300 m in diameter at an absolute pressure of 1.20 atm?
An ideal gas in a container is at a temperature of 89.8°C. What is the average translational kinetic energy of a gas molecule in the container?
What minimum power must be supplied to the coils to maintain a temperature difference of 17.6°C between the bottom of the slab and its surface? Assume all the energy lost is through the slab.
A glass windowpane in a home is 0.62 cm thick and has dimensions of 0.8 m 2.0 m. On a certain day, the indoor temperature is 28°C and the outdoor temperature is 0°C. (a) What is the rate at
If a bug zapper has a 7000 V power supply, what is the approximate separation between the plates?
a) What is the period of a pendulum oscillating with an amplitude of 5.0 cm? (L=1.0 m, m = 0.5 kg) b) What is the maximum velocity of the bob of the pendulum?
Answer the given questions with one of the statements that follow and defend your answer. THe answer to each part is either +Q, 0, or -Q. A spherical conducting object A is lowered through a hole in
An object is launched with an initial velocity of 23.4 m/s at an angle of 38.5 degrees above the horizontal. It lands on an 8.44m high hill. Find the following a) the horizontal and vertical compon
The firemen adjust the angle of elevation of the hose until the water takes 3.00 to reach a building 41.0 away. You can ignore air resistance; assume that the end of the hose is at ground level.
A 108 g cube of ice at 0°C is dropped into 1.0 kg of water that was originally at 70°C. What is the final temperature of the water after the ice has melted?
What is the electric flux through the (a) top face, (b) bottom face, (c) left face, and (d) back face? (e) What is the net electric flux through the cube?
The vertical component of Earth's magnetic field in this region is 40.0 µT directed downward. Calculate the induced emf between the ends of the wire and determine which end is positive.
What mass of water at 27.0 °C must be allowed to come to thermal equilibrium with a 1.59-kg cube of aluminum initially at 1.50 x 102 °C to lower the temperature of the aluminum to 54.8 °C
Assuming a patient takes 1.80 s to inhale, find the magnitude of the average induced emf in the coil during that time.
The plane of a rectangular coil, 4.0 cm by 7.0 cm, is perpendicular to the direction of a magnetic field . If the coil has 50 turns and a total resistance of 8.0 O, at what rate must the magnitude o
A) what is the max tension in the cable supporting the elevator? B) if the elevator was accelerating downwards at a rate of .2g, what is the tension in the cable supporting the elevator?
Find the flux of Earth's magnetic field of magnitude 5.00 10-5 T through a square loop of area 40.0 cm2 for the following: (a) when the field is perpendicular to the plane of the loop
A truck on a straight road starts from rest, accelerating at 2.00 m/s2 until it reaches a speed of 42.0 m/s. Then the truck travels for 56.0 s at constant speed until the brakes are applied, stoppi
An oil-filled capacitor has square parallel plates 23 cm on a side, separated by 0.48 mm. When the capacitor is charged to 88 V , the stored charge is 7.7 uC (micro Coulomb's). Find the dielectric
You have three 3.0 uF capacitors. Two of the capacitors are in parallel, and this parallel combination is in series with the third capacitor. This capacitor combination is connected across a 30-V ba
If water at the top of the falls is at 16.4°C, what is the maximum temperature of the water at the bottom of the falls? Assume all the kinetic energy of the water as it reaches the bottom goes i
The three capacitors C=2.0 uF (micro F) in parallel are connected across a 30-V battery. A). Find the charge on each capacitor. B). Find the potential difference across each.