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A car going 110 km/h southwest reaches a curve in the road. Suppose that the curve is an arc of a circle. After rounding the curve, the car velocity is 10 km/h west. The car takes 2.5 sec to round the curve.
a. Determine what is the car acceleration?
b. Determine the length of the car path on the curve?
c. If the car instead maintained a steady speed of 100 km/h, compute how long would it take to round the curve?
A star of radius 7.8 × 105 km rotates about its axis with a period of 66 days. Estimate the period of the neutron star
The intensity of the sound from a certain source is measured at two points along a line from the source. The points are separated by 12.9 m, Calculate the power output of the source
How much work must be completed to accelerate a baton from rest to an angular speed of 7.79 rad/s about its center? Consider the baton to be a uniform rod of length 0.596m and mass 0.495kg.
An astronaut at rest on Earth has a heartbeat rate of 70 beats/min. What will this rate be when she is traveling in a spaceship at 0.90c as measured (a) by an observer also in the ship and (b) by an observer at rest on the Earth?
each croquet ball in a set has a mass of 0.51 kg. the greenball, traveling at 12.3 m/s strikes the blue ball, which is atrest. find the final speed of the blue ball in the following situation
What will be the y-coordinate of the proton.
A 30kg child slides down a playground slide at a constant speed. find the magnitude of the kinetic friction force acting on the child
A car starts from rest at a stop sign. It accelerates at 3.7 m/s^2 for 6.8s , coasts for 2.4s , How far apart are the stop signs
If the gauge pressure of the blood at your heart is 13.25 kPa and your body doesn't compensate, what would the pressure be at your head, 57.4 cm above your heart
A proton has an initial speed of 3.5×10^5 m/s. What potential difference is required to bring the proton to rest
A parallel-plate vacuum capacitor has 6.36 J of energy stored in it. The separation betweenthe plates is 2.20 mm. If the separation is decreased to1.85 mm,
The merry-go-round is moving at a speed of 0.3 rev/sec when it shuts down. find the initial angular velocity of the merry-go-round
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