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A student is on board the express train when it passes through the subway station. He notices that the train's acceleration decreased as it entered the station. The speed of the train as its nose entered the 210 meter long station is 22.0 m /s. The train decelerates at a rate of 0.150 m /s2.
(a) Obtain how long is the nose of the train in the station?
(b) Find how fast is the train going when its nose leaves the station?
a popoular size of scuba diving take is 71.2 ft3 because this is the volume that the compressed air inside the tank
It is observed that the size of a real image formed by a concavemirror is four times thesize of the object when the object is 32.5 cm in front of the mirror. What is the radius of curvature of this mirror?
A fire engine moving to the right at 40 m/s sound its horn (frequency = 500 Hz) at the two vehicles shown in the figure. The car is moving to the right at 30 m/s, while the van is at rest. (a) What frequency is heard by the passenger in the car?
An alpha particle has twice the charge of a beta particle. Why does the former deflect less than the later when passing between electrically charged plates, What particles make up the nucleus of an atom
We place a 1 mole sample of an ideal monatomic gas in a cylinder with a piston and we heat the gas so it expands and performs work against the piston, How much heat does the gas absorb during the process
At rest, a car's horn sounds at a frequency of 480 Hz. The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-third the car's speed hears a frequency of 470 Hz. What is the speed of the car?
A proton with a mass of 1.67 x 10^-27 kg and charge on +1.6 x 10^-19 C, Find the time for the proton to make on complete circular orbit
An 805 kilogram race car can drive around an unbanked turn at a maximum speed of 56 m/s without slipping. Estimate the maximum speed if no down force acted on car
A photon emitted as a hydrogen atom undergoes a transition from the n = 5 state to the n = 2 state. The energy of the ground state is 13.6 eV. Find the frequency of the emitted photon
A solid, uniform sphere of mass 2.0 kg and radius 1.7 m starts from rest and rolls without slipping down an inclined plane of height 5 m. What is the angular velocity of the sphere
0.10 mol of argon gas is admitted to an evacuated 50 cm3 container at 20° C. The gas then undergoes isobaric heating to a temperature of 300° C. What is the final pressure of the gas? What is the final volume?
A solid steel cylinder is standing (on one of its ends) vertically on the floor. The length of the cylinder is 3.5 m and its radius is 64 cm. What is the weight of the object
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