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Calculate the ratio of the drag force on a jet flying at 899km/h at an altitude of 7.8 km to the drag force on a prop-driven transport flying at half that speed and altitude. The density ofair is 0.51 kg/m3 at 7.8 km and 0.73 kg/m3 at3.9 km. Assume that the airplanes have the same effectivecross-sectional area and drag coefficient C.
What is the angular velocity of the disk. If a single bit requires 5 µm of length along the motion direction, how many bits/second can the writing head write when it is 3.0 cm from the axis? display all work and explanations.
A car of mass m is on an icy driveway inclined at an angle ? = 16.0°, What is the car's speed at the bottom
An anchor, made of cast iron of bulk modulus 60.0 x 10^9 Pa and ofvolume 0.230 m^3, is lowered over the side of the ship to thebottom of the harbour where the pressure is greater than sea levelpressure by 1.75 x 10^6 Pa. Find the change in the volume..
A car moving at 10.0 m/s encounters a bump that has a circular cross-section with a radius of 30.0 m. when the car is at the top of the bump
a solid plastic sphere of radius 10.0 cm has charge with uniform density throughout its volume. the electric field 9.00
You are standing 3.0 m from a convex security mirror in a store. Estimate the radius of curvature of the mirror
A tennis ball on Mars, where the acceleration due to gravity is 0.379 of a g and air resistance is negligible, How high above its original point did the ball go
In 2000, NASA placed a satellite in orbit around an asteroid. Consider a spherical asteroid with a mass of 1.00×1016kg and a radius of 9.90km, What is the escape speed from the asteroid
the equation for the frequency f of oscillation of simple pendulum is f 12p vglwhere l is the length of the pendulum
A copper block is removed from a 310 C oven and dropped into 1.10 kg of water at 20.5 C. What is the mass of the copper block
You have two capacitors, one with capacitance 18.5 × 10-6 F and the other of unknown capacitance, You discover that, as a result, the unknown capacitor has a charge of 0.00143 C. Find its capacitance
A 7.80-g bullet moving at 560 m/s penetrates a tree trunk to a depth of 5.2 cm. Use work and energy considerations to find the average frictional force that stops the bullet
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