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An airplane has a speed of 285 km/h relative to the air. There is awind blowing at 95 km/h at 30.0o north of east relativeto Earth. In which direction should the plane head to land at anairport due north of it present location? What is the plane's speed relative to the ground?
A hydrogen balloon at Earth's surface has a volume of 6.78 m3 on a day when the temperature is 26.5°C and the pressure is 1.00 x 105 N/m2. The balloon rises and expands as the pressure drops. What would the volume of the same number of moles of hydro..
eagan is inspired by performers in the run up of the 2012 london olympics and paralympic games and is determined to
A sledge loaded with bricks has a total mass of 17.1 kg and is pulled at constant speed by a rope inclined at 19.9° above the horizontal. how much work is the roping doing on the sledge
A 1,216-kg car drives through a turn with radius 42 m. The coefficient of static friction is 0.9 and the coefficient of kinetic friction is 0.52. find the maximum speed (constant) at which the car can negotiate the turn
Calculate the potential energy of a rock with a mass of 55 kg while sitting on a cliff that is 27 m high.
In a heart pacemaker, a pulse is delivered to the heart 78 times per minute. What is the capacitance of the capacitor
You throw a 13.0N rock into the air from ground level and observe that, when it is 13.0m high, Use the work-energy principle to find the maximum height the rock will reach
a 15 g rubber bullet hits a wall with a speed of 150 m/s. What force did the wall apply to the bullet
a small disk of radius r=2.00 cm has been glued to the edge of a larger disk of radius R=9.00 cm so that the disks lie in the same plane. What is the rotational inertia of the two-disk assembly about the rotation axis through O
if the temperature of an ideal gas is doubled while its pressure is tripled, by what factor does its volume change
A 33.7-m length of copper wire at 20.0°C has a radius of 0.23 mm. If a potential difference of 7.0 V is applied across the length of the wire, determine the current in the wire
A distant galaxy emits light that has a wavelength of 683.2 nm. On earth, the wavelength of this light is measured to be 688.4 nm. (a) Decide whether this galaxy is approaching or receding from the earth.
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