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Q. Find the pressure difference on an airplane wing if air flows over the upper surface with a speed of 117 m/s, and along the bottom surface with a speed of 104 m/s.
Q. The pilot of an airplane travelling 200 km/h wants to drop supplies to flood victims isolated on a patch of land 165m below. The supplies should be dropped how various seconds before plane is directly overhead?
What direction is white dot on the sensor pointing
Two meteoroids are heading for earth. Their speed as they cross the moon's orbit is 2.3 km/s. The second meteoroid misses for earth by 2680 km. What is its speed at its closest point.
How many drops of water are in all the oceans on earth? Assume that contains 25 drops of water. Remember that this is an order-of-magnitude problem, so you should expect that you will only find rough estimates for the numbers you require.
Two identical positive charges exert a repulsive force of 6.4* 10^-9 N when separated by a distance of 3.8*10^-10 m. find the charge of each.
The mass per unit length of the cord is 1.24 e-2 kg/m, so the mass of the cord is negligible compared to the mass of block. The cord is being vibrated at a frequency of 167 Hz (vibration source not shown in the drawing).
A reflecting, spherical Christmas tree ornament has a diameter of 20 cm. A child looks at the ornament from a distance of 40 cm. define the image she sees. Where is the image locate.
Find the average force of the water on the diver. The swimmer comes to a stop 4 m below the surface. Find the average net force acting on the diver as coming to a stop in the water.
The magnetic field has been measured to be horizontal everywhere along a rectangular path x = 22 cm long and y = 5 cm high. Along the bottom the average magnetic field B1 = 1.3 10-4 tesla, along the sides an average magnetic field B2 = 1.0 10-4 te..
A tiger leaps horizontally from a 5.90 m high rock with a speed of 4.10 m/s. How far from the base of the rock will she land.
A uniform horizontal wire with a linear mass density of 0.50 g/m carries a 1.8 A current. It is placed in a constant magnetic field with a strength of 4.00 x10-3 T. The field is horizontal and perpendicular to the wire. Neglect the magnetic field ..
When the cylinder is rotating at 2.0 revolutions per second, determine the magnitude of the centripetal acceleration at the outer wall?
A 155 g copper bowl contains 245 g of water, both at 20°C. A very hot 300 g copper cylinder is dropped into the water, causing the water to boil, with 5 g being converted to steam. The final temperature of the system is 100°C. Neglect energy trans..
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