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The length of a rectangualr piece of land is 100 ± 1 m and its width is 50 ± 1 m. What is the perimter of the land
A piece of copper wire has a resistance per unit length of 5.65 10-3 ?/m. The wire is wound into a thin, Find the magnetic field strength at the center of the coil
The Venturi tube shown in the figure below may be used as a fluid flowmeter. Find the speed of the gasoline as it leaves the hose
While looking through the Mt. Palomar telescope, you discover a large planetary object orbited by a single moon. calculate the density of Planet Hephaestus
A bucket is filled with a combination of water (density 1000 kg/m3) and oil (density 700 kg/m3). what is the pressure at the interface between the oil and the water
Hail comes straight down at a mass rate of m/?t = 0.080 kg/s and an initial velocity of v0 = -16 m/s and strikes the roof perpendicularly. calculate the force exerted by the hail on the roof
A baseball pitcher delivers a fastball that crosses the plate with an angle of 5.77 degrees relative to the horizontal and a speed of 87.9 mph. What is the magnitude of the impulse received by the b
In an EM wave traveling west, the B field oscillates vertically and has a frequency of 88.0kHz and an rms strength of 6.35×10?9T
An 86lb net force is applied to a 42 Kg object at an angel. Determine the object's acceleration magnitude and direction
A baseball outfielder throws a 0.15 kg baseball at a speed of 40 m/s and an initialangle of 30?. What is the kinetic energy when it hits the ground
A tug of war is held between two teams of five men each. The mass of each man is 80 kg and he can initially pull on therope with a force of 1000 newtons. find the position of the teams as function o
When a hammer strikes a nail, it is compressed along its length. What is the impulse imparted to the hammer
A certain light bulb has a tungsten filament with a resistance of 19 ohms when at 20 degrees celsius and 140 ohms when hot. Find the temperature of the hot filament
Consider a spring of stiffness k and mass m. If we stretch - simultaneously - both ends of the spring by force F1 and F2. What will be the elongation of the spring
A charged isolated metal sphere of diameter 16.0 cm has a potential of 7000 V relative to V = 0 at infinity. Calculate the energy density in the electric field
A pendulum of period 2s is released from rest at an inclination of 5 degrees to the (downward) vertical. Find it's subsequent angular position as a function of time
In a slow-pitch softball game, a 0.200-kg softball crosses the plate at 20.0 m/s at an angle of 40.0° below the horizontal. Determine the impulse delivered to the ball
A bullet is fired into a large stationary absorber and comes to rest. Temperature measurements of the absorber show that the bullet lost 2060J of kinetic energy, What is the mass of the bullet
A critically damped simple harmonic oscillator starts at the origin at rest, and is subject to an additional force Fext = Fto/t. Find the subsequent motion
A rocket traveling 1850 m/s away from the Earth at an altitude of 6800 km fires its rockets, at what rate must the gases be ejected
You have an uncharged capacitor (12 x 10-6 F) and a resistor (1000 ohms) connected to a battery of 200 V at time t = 0, What is the final charge on the capacitor
mass, 0.057 kgs, driving force F0 = 8.9 N and linewidth 48 radians/second, has its damping constant, b, changed, Determine the new damping constant,b
A ball is thrown upward,. At 5.00 m above its launch point, the ball's speed is one-third its launch speed. What maximum height above the launch point does the ball attain
A system with m = 0.041 kg , k = 25 N/m and b = 0.33 kg/s is driven by a harmonically varying force of amplitude 4.7 N. Find the amplitude of the steady-state motion
A tractor tows a plane from its airport gate, doing 8.9MJ of work. How far does the tractor move the plane