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A plane on a mission to deliver food to hungry people is traveling parallel to the ground at a speed of 340.0 km/h. As the plane passes over point "X" on the ground a food parcel is released ( person holding it just lets go). At this time the plane is 190.0 m above the ground.
a) What is the magnitude of the velocity of the food package when it is released from the plane? Answer in m/s
b) How long does it take the food package to hit the ground? Answer in seconds
c) How far from point "X" does the food land (you may assume that the ground is completely horizontal with no hills)? Answer in metres
d) What is the magnitude of the velocity of the food just before it hits the ground? Answer in m/s
A sound wave propagates in air at 28°C with frequency 3.20 kHz. It passes through a region where the temperature gradually changes, and then it moves through air at 0°C. (a) What is the speed of the wave at 0°C? (b) What is the wavelength of the wave..
A certain string can withstand a maximum tension of 31 N without breaking. A child ties a 0.33 kg stone to one end and, holding the other end, What is the speed of the stone as the string breaks
You are traveling north at 23 m/s in your convertible. A truck behind you is traveling north at 12 m/s. Obtain the frequency that the truck driver hears from her horn
A photon with a wavelength 4.40 scatters from an electron initially at rest. Find out the wavelength of the scattered photon when the scattered electron has its utmost kinetic energy. Kmax = 2.37*20^-14.
a 10kg sign hangs from two wires. one wire makes an angle of 45 degrees and the other makes a 30 degree angle. what is
How can you determine whether particles are mesons or baryons by looking at their quark structure? Does it appear that the total baryon number of the universe is zero? What would that mean?
An insulating sphere of radius R=0.10 m has a uniform surfacecharge density equal to 5.9 mC/m2. A point charge ofmagnitude 0.71 mC is 0.45 m from the center of the sphere. Themagnitude of the force exerted by the sphere on the point charge is0.024..
A drop is falling in a Millikan oil-drop apparatus when the electric field is off. What are the forces acting on the oil drop, regardless of its acceleration? If the drop is falling at constant velocity, what can be said about the forces acting on it..
Find the five internal member forces and the three external support forces, assuming static equilibrium conditions at all joints
Copper at 20C has a resistivity of 1.72x10^-8 ohm-m. A potential difference of 2.0V is applied to a 1.00m long copper wire of radius 0.200mm. Find the resistance of the wire
What is the number of turns on the coil and what is the magnetic field at the mean radius?
A coin placed 30.4 cm from the center of a rotating, horizontal turntable slips when its speed is 48.8 cm/s. (b) What is the coefficient of static friction between coin and turntable?
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