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A transformer is designed to step down the 209 volts to 30 volts. If there are 446 turns on the input coil, how many turns should there be on the output coil
Which object posses more gravitational potential energy: a 2-kilogram ball at 2.2 meters above the ground or a bullet that is .15 kilograms at a height of 74 meters above ground
How much work is done by a pump to slowly compress, isothermally, 4.80L of nitrogen at 0 degree celcius and 1.60 atm to 2.40L at 0 degree celcius
In 1993, Javier Sotomayor set a world record of 2.45 m in the men's outdoor high jump. He is 193 cm tall, determine his takeoff speed
A water balloon is thrown horizontally at a speed of 2.0 m/s from the roof of a building that is 6.00 m above the ground. Determine which balloon hits first and how much sooner it hits the ground than
In a vertical dive a perefrine falcon can accelerate at 0.6 times the free-fall acceleration (that is 0.6 g) in reaching a speed of about 100 m/s. what is the radius of the turn
An object is placed to the left of a convex lens and on the optical axis. What is the magnification of the image formed by the lens
An object experiences a constant acceleration of 2.0 m/s^2 along the -x axis for 2.7s, Find the initial velocity vector of the object
Describe the basic concept of the Atwood's machine. What is the net applied force? What is the mass to which this net force is applied
A pitot tube on the nose of an airplane measures a stagnation pressure of 2.5 atmospheres. what is the speed of the airplane
A plane flies at 234 mi/hr (air speed) in the direction northeast; there is a wind of 51 mi/hr (ground speed) in the direction southeast. How far will the plane fly in 94 minutes
a proton has a speed 4.5*10^5 m/s at a point where electrical potential is 900V. it moves through a point where the electric potential is 500V. find the kenetic energy of proton at first point
Suppose that you wish to fabricate a uniform wire out of 1.00 g of copper. Assume the wire has a resistance R = 0.700 %u03A9, What will be the length of the wire
An aluminum wire having a cross-sectional area equal to 5.10 10-6 m2 carries a current of 3.50 A. Find the drift speed of the electrons in the wire
Calculate the limiting angle of resolution for the eye, assuming a pupil diameter of 1.95 mm, a wavelength of 530 nm in air
two strings with linear densities of g/m are stretched over pulleys, and attached to hanging blocks (string 1 is 20 kg=mass of block)-50 cm away. what is the unkown mass
When light with a wavelength of 228 nm is incident on a certain metal surface, Determine the wavelength of light that should be used to double the maximum kinetic energy of the electrons ejected from
the speed of light in a material is 0.41 c. what is the critical angle of a light ray at the interfacce between the material and a vacuum
Two cars of collide in a glancing collision and stick together. Before the colli- sion the first car (mass of 500 kg) is moving with velocity 25 m/s at an angle of 30%u25E6 North of East, Determine
Sirius is about 9.0 light-years from Earth. How far is the trip according to you, To reach the star by spaceship in 16 years (ship time), how fast must you travel
A sprinter crosses the finish line of a race. The roar of the crowd in front approaches her at a speed of 351 m/s. What is the sprinter's speed
In what ways is the transducer in medical ultrasound a 'speaker' & 'microphone?', What is the broadest definition of a 'transducer?'
The Lyman series results from transitions of the electron in hydrogen in which the electron ends at the n=1 energy level. calculate the wavelengths of the photons emitted in the transitions from the e
A small object is placed to the left of a convex lens and on the optical axis. What is the position of the image formed by the lens
an electric on a airplane operates 20.8 volts a draws a current of 14.7amps. How much energy in joules does the motor use