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A seed shoots out from the pod with the speed of 2.8 m/s but with a direction of motion 30° below the horizontal. What horizontal distance does it cover during its flight
A uniform magnetic field passes through a horizontal circular wire loop at an angle 15.1° from the normal to plane of the loop. Find the magnetic flux through the loop
A satellite is in a circular orbit about the earth (ME = 5.98 1024 kg). The period of the satellite is 4.40 104 s. What is the speed at which the satellite travels
Anemometers (pictured) are used to measure wind speeds. Wind striking the cups causes the assembly to rotate; a gauge measures the frequency of this rotation and translates the data into wind speed.
A lamp that plugs into a 120V wall socket can use either a 60W or 100W bulb. Which bulb has the higher resistance
the components of an airplane's motion are described as: 193 m/s west and 151 m/s south. determine the speed of the airplane
What is the ideal banking angle(in degrees) for a gentle turn of 1.20 km radius on a highway with a 105 km/h speed limit (about 65 mi/h)
en boxes, each 21.0 cm high and weighing 235 N, initially are all side by side on the floor. Compute the power necessary to stack the boxes
A jet flying at 136 m/s banks to make a horizontal circular turn. Calculate the magnitude of the necessary lifting force
A spring with a force constant of 1495 N/m is compressed 11.1 cm. Find the work done by the force compressing the spring
Sam, whose mass is 77kg , takes off across level snow on his jet-powered skis. How far has Sam traveled when he finally coasts to a stop
A rifle with a barrel length of 64cm fires a 12gbullet with a horizontal speed of 400m/s. What resistive force (assumed to be constant) does the wood exert on the bullet
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. What is the orbital period of the faster planet
External work equal to 4x10-7 J is needed to move a -5 nC charge at constant speed to a point at which the potential is - 20 V. What is the potential at the initial point
A 1.55kg book is sliding along a rough horizontal surface. At point A it is moving at 3.31m/s , and at point B it has slowed to 1.41m/s. How much work was done on the book between A and B
A charged particle of mass m and charge +q is placed in the vertical electrical field E(x)= A-Cx, Find expression describing the angular frequency of the charged particle oscillations
A cross-country skier slides horizontally along the snow and comes to rest after sliding a distance of 28 m. determine her speed at the start of the slide
A lightning flash may transfer up to 30 C of charge through a potential difference of 10^8 V. How much energy does this involve
in its daily prow of the neighborhood a cat makes a displacement of 100m due north followed by an 80m displacement east. what is the magnitude and direction of the velocity
a road rises 1ft for every 100ft it travels horizontally it is said to have a 15 grade. if the road you are traveling on has a 5 % grade what is the angle of the road above the horizontal
A bat emits chirping sounds of frequency 75 kHz while hunting for moths to eat. The bat flies east at 8 m/s. What is the frequency of the reflected sound detected by the bat
A glaucous-winged gull, ascending straight upward at 5.00m/s , drops a shell when it is 14.0m above the ground. how long did it take for shell to hit the ground?
A pressure wave in air is described by the following equation: P(x,t) = A sin(2(pi)t/T - 2(pi)x/lambda), Determine the speed of the pressure wave
A wedge of mass M and angle ? is placed on a flat frictionless surface. A crate of mass m is placed on the wedge at height h and starts sliding down the wedge without friction. Find the accelerat
A 89 kg box rests on a level surface as shown in Figure 1. The coefficient of static friction, µS = 1.3 and the coefficient of kinetic friction, µK = 0.9. find the magnitude of Gravity