Physics

a bulb emits light ranging in wavelength from 2.64e-7 m to 8.66e-7 m. what is the maximum frequency of the light (in hz)?
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which component of magnetic field - axial ( baxial ) or radial ( bradial ) should be larger at the center of the coil?
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when a toolbox weighing 5 newtons is resting on the ground next to a sawhorse, how much potential energy does it have?
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a pump with a displacement of 65 cc/rev has a mechanical efficiency of 0.93. what is the actual torque (in n-m) when the outlet pressure is 18.1 mpa?
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An empty cylindrical barrel is open at one end and rolls without slipping straight down a hill. The barrel has a mass of 21.0 kg, a radius of 0.260 m, and a length of 0.650 m. The mass of the end of the barrel equals a fifth of the mass of its side, and the thickness of the barrel is negligible. The acceleration due to gravity is =9.80 m/s2.What is the translational speed f of the barrel at the bottom of the hill if released from rest at a height of 31.0 m above the bottom?
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a record turntable is rotating at 33 1 3 rev/min. a watermelon seed is on the turntable 7.3 cm from the axis of rotation. (a) calculate the acceleration of the seed, assuming that it does not slip. (enter the magnitude.)
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a long solenoid that has 1,170 turns uniformly distributed over a length of 0.395 m produces a magnetic field of magnitude 1.00 10-4 t at its center. what current is required in the windings for that to occur?
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Give examples of motion in which the directions of the velocity and acceleration vectors are the following. (a) opposite - a car moving along a straight road while speeding up - a particle moving around a circular track at constant speed - a car moving along a straight road while braking (b) the same - a car moving along a straight road while braking - a particle moving around a circular track at constant speed - A car moving along a straight road while speeding up (c) mutually perpendicular - a car moving along a straight road while speeding up - a car moving along a straight road while braking - A particle moving around a circular track at constant speed
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A marble is travelling at 2.0 m/s along a table top. The top of the table is 1.5 m above the floor. Find:a. the time the marble will take to reach the floor.b. the distance of the table that the marble will land.c. the velocity of the marble just before it reaches the floor.
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A quality control engineer wants to determine if the diameters of ball bearings produced by a machine are normally distributed. From a random sample of 300 bearings, he determines that the sample mean is 10.00 mm with a sample standard deviation of 0.10 mm. Moreover, he obtains the following frequency distribution for the diameters. Are the bearing diameters normally distributed at the 5% significance level?
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when a cold air mass and a warm air mass meet near the ground, they can create a rotating horizontal tube of air called a
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in an ore-mixing operation, a bucket full of ore is suspended from a traveling crane which moves along a stationary bridge. the crane is traveling at a speed of 10 ft/s when it is brought to a sudden stop. determine the maximum horizontal distance through which the bucket will swing.
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A gas is contained in a cylinder with a frictionless moveable piston at a pressure of 2.7 * 105 pascals and a volume of 0.04 cubic meters. What is the work done by the gaseous system if the volume is increased to 0.12 cubic meters ?
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the earth's magnetic field, like any magnetic field, stores energy. the maximum strength of the earth's field is about 7.0 10-5 t. find the maximum magnetic energy stored in the space above a city if the space occupies an area of 3.40 108 m2 and has a height of 1300 m.
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an airplane flying horizontally with a speed of 500 km/h at a height of 800 m drops a crate of supplies. if the parachute fails to open, how far in front of the release point does the crate hit the ground? use si units.
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Please help me with this physics question :P
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a rifle fires a bullet. which of the objects has the largest magnitude of momentum upon being shot? assume the external forces are negligible.
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an unbelted victim in a car accident will continue to move in the same direction and with the same speed until the dashboard causes a change in motion. this best exemplifies
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a solid cylinder is released from the top of an inclined plane of height 0.72 m. from what height, in meters, on the incline should a solid sphere of the same mass and radius be released to have the same speed as the cylinder at the bottom of the hill?
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1. ellen is swinging a 0.01kg yo-yo in a circular path perpendicular to the ground. the yo-yo moves in a clockwise direction with a constant speed of 2m/s. what is the velocity of the yo-yo at the bottom of the circle?
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a 20-g particle moves in simple harmonic motion with a frequency of 3.0 oscillations/s (3.0 hz) and an amplitude of 5.0 cm. (c) find the maximum acceleration of the particle
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Mercury has a mass of 3. 29E23 kg and a radius of 2. 44E6 m. Venus has a mass of 4. 87E24 kg and a radius of 6. 05E6 m. The gravitational field near the surface of Mercury is N/kg. The gravitational field near the surface of Venus is N/kg
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HELPPPP LATE HOMEWORK DUE TODAY
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a 0.25 kg harmonic oscillator has a total mechanical energy of if the oscillation amplitude is what is the oscillation frequency?
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