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A friend asks you how much pressure is in your car tires. You know that the tire manufacturer recommends 30 psi, but it's been a while since you've checked. You can't find a tire gauge in the car, but you do find the owner's manual and a ruler. Fortunately, you've just finished taking physics, so you tell your friend, "I don't know, but I can figure it out." From the owner's manual you find that the car's mass is 1300 kg. It seems reasonable to assume that each tire supports one-fourth of the weight. With the ruler you find that the tires are 14 cm wide and the flattened segment of the tire in contact with the road is 14 cm long.
What answer will you give your friend?
An object of mass 12.0 kg and traveling 10.0 m/s to the right collides with a second object of mass 24.0 kg traveling 13.0 m/s to the left. how much energy went into heat and sound
A new space shuttle takes {d} days to travel from the Earth to the Moon once it leaves Earth's orbit. Estimate the spacecraft's average speed in kilometers per hour
there are two small objects charged that repel each other they both have a force f and are separated by a distance d.
Two cars of mass 2000 kg and 1000 kg, respectively, collide inelastically. Their velocity after impact is 4 m/s, Find the initial speed and direction of the lighter car
Partciles (mass of each =.2kg) are placed at the 80 cm and 100 cm marks of a meter stick. the mass of the meter stick is .3kg. what is the moment of inertia of the body
a 100 Watt electric light bulb is plugged into 120 Volt, 60 HZ AC voltage source. What is the peak current in the bulb
A 0.180-kg yo-yo consists of two solid disks of radius 12.00cm joined together by a massless rod of radius 1.00 cm, Find the acceleration of the yo-yo
A 30-meter steel tape is correct at a temperature of 20.0(C). The distance between two points, as measured by this tape on a day when the temperature is 5 (C), is 25.970m. What is the true distance between the points?
In the circuit shown in the figure, the capacitors are all initially uncharged and the battery has no appreciable internal resistance. find the maximum potential difference across each capacitor
Suppose wire A and wire B are made of different metals, and are subjected to the same electric field in two different circuits. How many electrons enter wire B every second
A man pushes a 42 kg crate uphill along a plane inclined at 30 degree with respect to the horizontal. find the total work on the crate by dissipative forces
Compute the average linear velocity of the discus
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