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the altitude of a hang glider is increasing at a rate of 6.80 m/s. At the same time, the shadow of the glider moves along the groung at a speed of 16.5 m/s when the sun is directly overhead. Find the magnitude of the glider's velocity.
Answer: ____ m/s
Potassium is an essential element that normally comprises about 0.30% of a person's body mass. 0.12% of potassium is the radioactive K-40, What's the potassium activity in a 73kg person
Calculate the horizontal force that must be applied to create an acceleratrion of 1.8g for a 1.2kg puck on a horizontal friction-free air table.
The radius of a park merry-go-round is 2.4 m. To start it rotating, you wrap a rope around it and pull with a force of 260 N for 11 s. What is the moment of inertia of the merry-go-round
A high-speed photograph of a club hitting a golf ball is shown in the figure below. find the average force exerted on the ball by the club
One afternoon, a couple walks three-fourths of the way around a circular lake, What is the magnitude of the couple's displacement
Two point charges, q1 = -12.5 ?C and and q2 = +18.7 ?C, are placed at two of the corners of a right triangle with a = 23.5 cm, Find the magnitude of the electric field at the third corner of the triangle
Suppose two kids get on a 4 meter long teeter-totter. The one on the right creates a CW torque of 350 Newton-meters (Nm). Quite by coincidence, when the other kid sits at 1 meter from his end they balance perfectly. How much does second kid weigh.
Estimate the air pressure at the cloud base from the problem 1 assuming isothermal atmosphere with the average temperature between the cloud base and the surface
A pump, submerged at the bottom of a well that is 35m deep, is used to pump water uphill to a house that is 50m above the top of the well, as shown above. The density of the water is 1000 kg/m3. All pressures are gauge pressures. Top of well pipe to ..
The equation of a transverse wave traveling along a very long string is y = 7.0 sin (0.050 ?x + 8.0 ?t), Determine the maximum transverse speed of a particle inthe string
The vapor pressure of benzene is 100 mm Hg at 26.1 C and 400 mm Hg at 60.6 C. Estimate the heat of vaporazitaion of benzene in this temperature range
A 56-? loudspeaker, a 8.9-? loudspeaker, and a 2.3-? loudspeaker are connected in parallel across the terminals of an amplifier. Determine the equivalent resistance of the three speakers
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