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Driving home from school one day you spot a ball rolling out into the street. You brake for 1.30 s, slowing your 840 kg car from 16.0 m/s to 9.50 m/s.
(a) What was the average force exerted on your car during braking?
Magnitude:
(b) How far did you travel while braking?
Meters:
In one day, a 81-kg mountain climber ascends from the 1410-m level on a vertical cliff to the top at 2208 m. The next day, she descends from the top to the base of the cliff, which is at an elevation of 1215 m.
what is the maximum mass it can support in freshwater. find the maximum height of the projectile is equal to its horizontal range.
You look through a Polaroid sheet at a 75 W light bulb 3.00 m away. Find the intensity of the light you see
A block with mass m = 4 kg is sinking with constant acceleration aT = 1.9 m/s2 into the ground. The acceleration due to gravity is g = 9.81 m/s2. In what direction is the normal force
A long wire lying along the x-axis carries a current of 2.8 A in the +x direction. There is a uniform magnetic field present, given by B=0.003i + 0.004j + 0.002k, where i, j, k are the unit vectors along the cartesian coordinate axes') in units of..
If 40.7 kW is to be transmitted to consumers over two 0.107 %u2126 lines, estimate how much power is saved if the voltage is stepped up from 115 V to 1150 V
Iron atoms have been detected in the sun's atmosphere, some with many of their electrons stripped away. What is the net electric charge (in coulombs) of an iron atom
A 10cm -diameter cylinder contains argon gas at 10 atm pressure and a temperature of 60?C . A piston can slide in and out of the cylinder. What is the final length of the cylinder
A conducting sphere is placed within a conducting spherical shell as shown in the figure below. The conductors are in electrostatic equilibrium. The inner sphere has a radius of 1.50 cm, the inner radius of the spherical shell is 2.25 cm, and the ..
A 9 m, 260-N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.5, and the ladder makes a 50° angle with the ground. How far up the ladder can an 800-N person climb before the ladd..
The left mass (10 kg) has a coefficient of kinetic friction between itself and the table of .25, calculate the contact force that acts between the masses
A cubic centimeter in a typical cumulus cloud contains 50 to 500 water drops, which have a typical radius of 10 µm. How much mass does the water in the cloud have
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