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A red car and a green car, identical except for the color, move toward each other in adjacent lanes and parallel to an x-axis. At time t=0, the red car is at xr=0 and the green is at xg=220m. If the red car has a constant velocity of +20km/h, the cars pass each other at x=44.0 m,and if it has a constant velocity of +40km/h, they pass each other at x=77.0m.
what is the initial velocity of the green car?m/s
what is the acceleration of the green car?m/s^2
The mechanical advantage of a hydraulic jack is 450. Find the weight of the heaviest automobile that can be lifted by an applied force of 60.0 N
A Goodyear blimp typically contains 5500m3 of helium (He) at an absolute pressure of 1.1multiplied by 105 Pa. What is the mass of the helium in the blimp
You tie a cord to a pail of water, and you swing the pail in a vertical circle of radius 0.900 meter. Determine what minimum speed must you give the pail at the highest point of the circle
q1. a slingshot consists of a light leather cup attached between two rubber bands. it takes a force of 26 n to stretch
A glass capillary tube with a diameter of 8.5 mm and length 16 cm is filled with a salt solution with a resistivity of 3.4 ?m. What is the resistance?
A typical home may require a total of 2.00*10^3kWh of energy per month. Suppose you would like to obtain this energy from sunlight, which has an average daylight intensity of 1400 W/m^2.
The absorption spectrum of an atom consists of the wavelengths 200 nm, 300 nm, and 500 nm. What wavelengths are seen in the atom's emission spectrum?
An electron in an oscilloscope is accelerated as a result of the potential difference between the cathode and anode. The electron has negligible initial speed and a final speed of 2.40 107 m/s. Find the voltage drop from cathode to anode.
Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree trunk at an angle of 25.7° above the horizontal, What is the magnitude of the net torque exerted on the branch by the children
A certain sample of gas has a volume of 20.00 dm3 at 0°C and 1.000 atm. A plot of the experimental data of its volume against the Celsius temperature, ?, at constant p, gives a straight line of slope 0.0741 dm3 (°C)?1. From these data alone (without ..
A 79.2 kg airplane pilot pulls out of a dive by following, at a constant speed of 191 km/h, the arc of a circle whose radius is 321m.
The square loop shown is made of wires with a total series resistance of 10 W. It is placed in a uniform 0.100-T magnetic field directed perpendicular into the plane of the paper.
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