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A car starts from rest and travels for 10.0 s with a uniform acceleration of +3.0 m/s2. The driver then applies the brakes, causing a uniform acceleration of ?2.0 m/s2. If the brakes are applied for 1.0 s, determine each of the following.
(a) How fast is the car going at the end of the braking period?
(b) How far has the car gone?
Three resistors, R1 = 17? , R2 = 52? , and R3=R, are connected in series with a 24.0 Vbattery, find the potential difference across each resistor
The concentration was reported as 10% CO2 at a temperature of 30oC and a pressure of 1.2 atm. The flow rate of flue gas is 18,000 m3/min. Determine the Partial pressure of CO2 in atm.
A toy rocket starts at rest, and is fired vertically. The fuel burns for tine t1 = 15.7 s, and the rocket rises with a constant net upward acceleration of magnitude a1 = 7.23 m/s2. calculate the total time the rocket is in the air
You are driving along a highway at 25 m/s when you hear the siren of an emergency vehicle traveling in the opposite direction on the other side of the highway. What is the speed of the vehicle
A long wire is known to have a radius greater than 4.0 mm and to carry a current that is uniformly distributed over its cross section. what is the radius of the wire
A steel wire with mass 20.5 g and length 1.29 m is strung on a bass so that the distance from the nut to the bridge is 1.10 m. Compute the linear density of the string
An air-track glider attached to a spring oscillates between the 16.31 cm mark and the 51.41 cm mark on the track. What is the maximum speed of the glider
A rat with an emissivity of .40, total area of .15m^2 and a temperature of 37C. How much energy must the rat's body generate to maintain a skin surface of 37C in a 24 hour period
Sand from a stationary hopper falls onto a moving conveyor belt at the rate of dm/dt = 5 kg/s, Find the sand's rate of change of momentum in the horizontal direction
A diffraction grating is made up of slits of width 290 nm with separation 910 nm. How many maxima are there in the full diffraction pattern
A transformer has an input coil with Nin = 200 turns and Nout = 850 turns. what is the voltage across the output circuit
A 120 m long copper wire (resistivity 1.68e-8 Ohm*m) has resistance 6 Ohm. What is the diameter of the wire
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