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A 1000-kilogram race car is traveling at 60 m/s around a curved section of track that has a radius of 300 m. What is the centripetal force that acts on the car
A 30-meter steel tape is correct at a temperature of 20.0(C). The distance between two points, What is the true distance between the points
A space probe is launched from Earth, headed for deep space. At a distance of 15,000 miles from the Earth's center, What is the size of the force when it is at 30,000 miles from the Earth's center
The classroom temperature is 20 C. The relative humidity is 60%. What is the total humidity (kg of H2O vapor) in the room
A 1 kg ball is attached to a 2 m long piece of very light string and suspended in such a way that it can freely swing and it passes just above the ground. completely describe the motion of the two m
A trolley that moves along a horizontal beam is acted upon by two forces as shown. What is the corresponding magnitude of the resultant
On planet X, the absolute pressure at a depth of 2.30 m below the surface of a liquid nitrogen lake is 5.50×10^5 N/m^2. What is the atmospheric pressure on planet
Jack and Jill exercise in a 25.0-m-long swimming pool. Find the average velocity and average speed of each swimmer
A 70.0 cm thick layer of oil floats on a 120 cm thick layer of water. What is the pressure at the bottom of the water
A 75 g piece of ice at an initially unknown temperature is placed into a glass of 350 g of water sitting at room temperature, What is the specific heat capacity of the unknown metal
computer chips are etched on circular cylinder wafers of thickness 0.60mm that are sliced from a solid cylindrical silicon crystal of length 30cm
A soccer ball lying on the ground is kicked with an initial velocity of 10.0 m/s at an angle of 37 degrees above the horizontal
A glass flask at 0 degrees Celsius is filled to the brim with 1000 cm(^3) of mercury, what is the coefficient of volume expansion in the glass
A cooking vessel on a slow burner contains 11.2 kg of water and an unknown mass of ice in equilibrium at 0°C at time t = 0. determine the initial mass of ice
A circular wheel has a radius R = 0.45 + or - 0.02 m. The wheel is observed to be rotating uniformly with period T = 2.00 +or- 0.05 s. Compute the frequency with which the wheel spins
When my car has been parked for a while, its tires look a wee bit ‘low,' and, when their pressure is measured at 23 C, What is the temperature of the air inside the tires
An amount of ideal gas is con?ned to a sealed box at one-half atmospheric pressure, i.e., 50.65 kPa. What is the new pressure of the gas in the smaller box
A projectile is fired into the air from the top of a cliff of height h = 198 m above a valley. Where does the projectile land
It has been proposed to save fuel in air travel by reducing the air speed. How much fuel is saved in a 2000 mile trip
A charge of -250e is uniformly spread through the volume of a sphere of radius 2.00 cm. What is the volume charge density in that sphere
A hot air heating system rated at 84,000 Btu/hr has an efficiency of 65%. determine the temperature of the outlet air
100.0 W tungsten filament bulb generates 95.0 W of heat, determine difference in temp. between inner and outer surface of glass
Announcers at a certain radio station say that they are at "95 FM on your dial," meaning that they transmit at a frequency of 95 MHz, find the wavelength of the radio waves from this station
A spectral line from the left side of Saturn's rings, as you see them, Which way (direction) is Saturn rotating, and why
A jet plane lands with a speed of 114 m/s and can accelerate at a maximum rate of ?4.20 m/s2 as it comes to rest. what is the minimum time needed before it can come to rest