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A certain speed boat weighs 5,880 N. It can accelerate from 0 to 40 m/s in 5 seconds. (Need to see the math).
a) What is the mass of the boat?
b) What is the acceleration?
c) How large is the net force acting on the boat?
A .228g wires are stretched between two points 77.20 cm apart. The tension in the wire is 618N. Find the frequency of the first harmonic. Reply in units of Hz.
The rod shown in the drawing is pivoted about an axle passing through its center (solid circle). Is the net torque about the axle due to these forces zero
A uniform shaft, fixed at one end & free at other, is twisted so that each cross - section rotates through an angle proportional to the distance from the fixed end. If the shaft is released from rest in this position, determine the s
The system shown below has frictionless pulleys and the string have negligible mass. what is the speed of the objects when they are at the same height
A wall in a house contains a single window. The window consists of a single pane of glass whose area is 0.10 m2, what is the percentage lost by the window
A capacitor consists of square conducting plates 28cm on a side and 5.5mm apart, carrying charges ± 1.8?C, Find the stored energy
How high will a 0.32kg rock go if thrown straight up by someone who does 119J of work on it? Avoid air resistance.
The minimum stopping distance for a car travelling at a speed of 30 {rm m/s} is 60 {rm m}, including the distance travelled during the driver's reaction time of 0.54 {rm s}.
An unmarked police car travelling a constant 95 km/h is passed by a speeder travelling 145km/h. Precisely 1 s after the speeder passes, the police officer steps on the accelerator.
Suppose you are 69 cm from a plane mirror. What area of the mirror is used to reflect the rays entering one eye from a point on the tip of your nose if your pupil diameter is 4.90mm.
The wheel of a car has a radius of 0.320 m. The engine of the car applies a torque of 288 N · m to this wheel, What is the magnitude of the static frictional force
A mechanic pushes a 3.20 X 10^3 kg car from rest to a speed of v, doing 5,100 J work in the process. find the horizontal force exerted on the car
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