Imagine that you are in a car that is traveling up a bridge that is inclined at an angle of 4.0 degrees from the horizontal. The car's speed is 35.0 mi/hr (15.65 m/s). At time t = 0 you open your window and illegally drop a soda can from your rest frame over the edge of the bridge. Your height above ground level is 36.0 m.

1. How far does the can travel horizontally before hitting the ground? Neglect air resistance.
2. At what angle does the can strike the ground (in degrees)? This is the angle which the can's velocity vector makes with the horizontal just before hitting the ground.
3. What is the speed of the can just before it hits the ground?

A soccer player kicks the ball toward a goal that is 25.0 m in front of him. The ball leaves his foot at a speed of 17.0 m/s and an angle of 36.0 ° above the ground. Find the speed of the ball when the goalie catches it in front of the net.

Two containers of ideal gas with identical initial conditions experience identical temperature increases. Container A goes through the increase isobarically (with constant pressure) and container B isochorically (with constant volume).

More heat was added to container A.

More heat was added to container B.

Equal amounts of heat were added to both containers.

Any of the above relations is possible, depending on the work. 12.5 points Question 3

Say that a person is playing an amplified stringed instrument while riding on a vehicle approaching you at considerable speed. In order for the person to perform so that the music sounds correct to you, the person should

have increased the tension in the strings.

finger the strings so as to make the portions of the strings that oscillate shorter.

do either of the above, since both will have the desired effect.

do something not listed above, since neither act will have the desired effect.

A boulder rolls over a 50m high cliff. How fast was the boulder moving if it was found 180 m on the ground? At what time did the boulder hit the ground? At what velocity was it approaching the ground?

Conversion of -3.5 x 10e-6 to fentometers?

1. During the Apollo missions, astronauts traveled from the Earth to the Moon and back. When they were close to Earth, gravity accelerated them toward Earth, but when they were close to the Moon, gravity accelerated them toward the Moon. However, there is a point somewhere between the Earth and the Moon where they experienced no acceleration due to gravity.

   The Earth is 6.0×1024 kg, the Moon is 7.3×1022 kg in mass, and the two are 3.8×108 m apart. How far from Earth were the astronauts when they experienced zero acceleration due to gravity? Hint: remember that zero acceleration requires zero net force.

A sound wave with an intensity level of 80.6 dB is incident on an eardrum of area 0.600 ✕ 10^-4 m². How much energy is absorbed by the eardrum in 4.0 minutes?
µJ?

A source of sound waves of frequency 1.2 kHz is traveling through the air at 0.55 times the speed of sound.

(a) Find the frequency of the sound received by a stationary observer if the source moves toward her.
Hz
(b) Repeat if the source moves away from her instead.
Hz

4.     Explain how following measurements are made. Please mention equipment used during those measures.

a.      Air quality

b.     Wind speed

c.      Carbon Monoxide

d.     Sound level

e.      Personal noise exposure

f.      Vibration

A long solenoid with 1.65 103 turns per meter and radius 2.00 cm carries an oscillating current I = 6.00 sin 120πt, where I is in amperes and t is in seconds. (a) What is the electric field induced at a radius r = 1.00 cm from the axis of the solenoid? (Use the following as necessary: t. Let E be measured in millivolts/meter and t be measured in seconds.) E =

(b) What is the direction of this electric field when the current is increasing counterclockwise in the solenoid?

clockwise counterclockwise

Correct: Your answer is correct.

A uniform disk of mass M is rotating freely about its center On its rim lie a cockroach of mass M/3 Initially the cockroach and disk rotate together with an angular velocity of 2.5 rad/s Then the cockroach walks halfway to the center of the disk. What is the new angular velocity of the system?

A 425-m long spaceship passes by an observer at the speed of 2.60×108 m/s. What length does the observer measure for the spaceship? .... m

What is the rest energy of 37 g of shelled peanuts? .... J

Find the energy in joules of a single photon of microwave radiation with the wavelength of 0.76 cm..... J

Using the Bohr model, find the wavelength in nanometers of the radiation emitted by a hydrogen atom, when it makes a transition from the n = 6 state to the n = 4 state. ..... nm

Iodine-131, a radioactive isotope, has a nuclear mass of 130.8770 u. The atomic number of iodine is 53. Find the binding energy of the I-131 nucleus in joules.

37) A pendulum whose period in a vacuum is 2.3 second is placed in a resistive medium. Its amplitude on each swing is observed to be half that on the previous swing. What is its new period? Given that the pendulum bob is of mass 0.2 kg, and is subjected to a periodic force of amplitude 0.5 N and period 1 s, find the angular amplitude of the resulting forced oscillation.

Consider and airplane flying at a pressure altitude of 40,000 feet and a density altitude of 30,000 feet. Calculate the outside air temperature.

Design an experiment to find the relationship between the mass on the spring and the period of oscillation. Include: What quantity will you vary?

Which quantities will you hold constant?

What quantities will you measure?

What will you plot?