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An AC voltage source has an output voltage given by Δv = (155 V) sin377t.
a) Discover the rms voltage output.
b) Discover the frequency of the source.
c) Discover the voltage at t = 1/120 s.
d) Find the maximum current in the circuit when the voltage source is connected to a 40.0 Ω resistor.
An Australian emu is running due east in a straight line at a speed of 12.5 m/s and slows down to a speed of 11.4 m/s in 7.3 s. (a) What is the direction of the bird's acceleration? north south east west.
When cars are equipped with flexible bumpers, they will bounce off each other during low-speed collisions, thus causing less damage. What is the speed of the lighter car just after collision
A running 61-kg cheetah has a top speed of 30 m/s. What is the cheetah's maximum kinetic energy
Two converging lenses are separated by 24.20 cm. The focal length of each lens is 12.40 cm. Determine the final image distance relative to the lens on the right
a flat conducting loop is positioned in a uniform magnetic field directed along the x axis. for what orientation of the
A painter is standing on scaffolding that is raised at constant speed. As he travels upward, he accidentally nudges a paint can off the scaffolding and it falls a distance 15.4m to the ground. find the speed of the can just before it hits the groun..
an ideal refrigerator or an ideal heat pump is equivalent to a carnot engine running in reverse. that is energy qc is
a hydrogen atom is in its first excited state n 2. using the bohr theory of the atom calculate the following.a the
A second baseman tosses the ball to the first baseman, who catches it at the same level from which it was thrown, What is the y component of the ball's velocity
Suppose that two forces of magnitude 40 gm-wt and 30 gm-wt are added together. Find the magnitude of the largest resultant and the smallest resultant possible for this addition
A motorist travelling at 82 km/hr is being chased by a police car at 131 km/hr. If the police car starts from 3.5 km back, how long does it take to catch the motorist? Leave time in hours.
You are a blacksmith and have been working with 19.3 kilogram of steel. When you are finished shaping it, the steel is at a temperature of 231°C. Find how much of this water is converted to steam
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