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A cyclist is at rest at a traffic light. When the light turns green he accelerates at a uniform rate of a = 1.2 m/s2. How many seconds after the light turn green does he reach his cruising speed of 6 m/s? Please explain step by step.
The work done by an external force to move a -7.75 µC charge from point a to point b is 25.0 ? 10-4 J, what is the magnitude of the potential difference between a and b
A meteorologist tracks the movement of a thunderstorm with Doppler radar. At 8:00 PM, the storm was 60 northeast of her station. At 11:00 PM, the storm is at 80 north. What is the direction of the average velocity of the storm?
When a high-speed passenger train traveling at vP = 133 km/h rounds a bend, the engineer is shocked to see that a locomotive has improperly entered onto the track from a siding and is a distance D = 724 m ahead, What must be the constant accelerati..
a bullet of mass m1 is fired horizontally with a speed v into the bob of a ballistic pendulum of mass m2 find the maximum hight h attained by the bob
You then notice another fly is buzzing nearby and you deftly manage to trap the second fly in the cup without releasing the first fly. If you were able to continue trapping flies until the cup was full, estimate how many flies you could trap in th..
Skiers ski down from the top of a mountain that is 580 meter above a valley. Find the gravitational potential at the top with respect to the valley
Knowing that the coefficient of damping is 8 lb s/in., determine the required value of the coefficient of damping if the amplitude of the steady-state vibration of the element is to be 0.15 in
A wire of initial length L0 and radius r0 has a measured resistance of 2.0 . The wire is drawn under tensile stress to a new uniform radius of r = 0.45r0. What is the new resistance of the wire
A 60-W light bulb radiates electromagnetic waves uniformly in all directions. At a distance of 1.0 m from the bulb, the light intensity is I0, the average energy density of the waves is u0, and the rms electric and magnetic field values are E0 an..
Consider a uniform electric field E = 2.3 kN/C x. What is the flux of this field through a square of side 11 cm if the normal to its plane makes a 36° angle with the x axis
A 22.5-microF capacitor is charged by a 147.0-V power supply, Calculate the energy stored in the inductor at t = 1.30 ms
Calculate the temperature at which a tung- sten filament that has an emissivity of 0.25 and a surface area of 6.6×10?5 m2 will radiate energy at the rate of 51Win a roomwhere the temperature is 26?C. The Stefan-Boltzmann constant is 5.6696 × 10?8 W/m..
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