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Q1. A Ford Mustang can accelerate from 0 to 60 in a time of 5.4. A Mini Cooper isn't capable of such a rapid start, but it can turn in a very small circle 35 in diameter. How fast would you need to drive the Mini Cooper in this tight circle to match the magnitude of Mustang's acceleration?
Q2. A 53 kg skier skis directly down a frictionless slope angled at 12° to horizontal. Choose the positive direction of the x axis to be downhill along the slope. A wind force with component Fx acts on the skier. What is Fx if the magnitude of the skier's velocity is (a) constant, (b) increasing at the rate of 1.2 m/s2, and (c) increasing at the rate of 2.5 m/s2. Use g=9.81 m/s2.
A test tone used on a radio has a frequency of 951 Hz. What is the wavelength of this sound in air at normal room temperature
A 20 liter tank of helium is at a pressure of 172kPa at a temperature of 0 C. What is the speed of the helium atoms in the tank at this new volume
A sprinter crosses the finish line of a race. The roar of the crowd in front approaches her at a speed of 351 m/s. What is the sprinter's speed
A constant force, = (1.27, -2.33, 3.93) N, acts on an object of mass 10.3 kg, What is the total work done by this force
A converging lens has a focal length of f = 22.0 cm. An object is placed 41.0 cm from the lens. Find the size of the image in cm if the object has a height of 4 cm. express answer with one decimal place.
What minimum heat is needed to bring 230g of water at 20 degrees C to the boiling point and completely boil it away.
a road rises 1ft for every 100ft it travels horizontally it is said to have a 15 grade. if the road you are traveling on has a 5 % grade what is the angle of the road above the horizontal
A positive charge +q1 is located to the left of a negative charge ?q2. On a line passing through the two charges, What is the distance between the charges
A 1650-kg car is travelling at 31.2 m/s. How fast must a 91.0-kg bicycle and rider be travelling to have the similar kinetic energy as the car.
An amplifier supplies 5.0 Watts to a perfectly efficient loudspeaker at one end of a 10.0 cm diamter tube filled with air. What is the intensity of the sound at the other end of the tube
A styrofoam cooler (k = 0.030 W/(m·K)) has outside dimensions of 0.270 m by 0.230 m by 0.280 m, and an average thickness of 2.6 cm. About how long would it take for 1.60 kg of ice at 0 °C to melt in the cooler if the outside temperature is 30.0 °C..
A boy of mass 50 kg runs up a hill of vertical height 300 m in 20 minutes. calculate the work he does climbing the hill
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