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A 1000-kg car is picking up speed as it goes around a horizontal curve whose radius is 100 m. The coefficient of static friction between the tires and the road is 0.350. At what speed will the car begin to skid sideways?
An underwater scuba diver sees the Sun at an apparent angle of 42.0° from the vertical. What is actual direction of the Sun
A laser pulse has an energy of 25 J and a beam radius of 2 mm. The pulse duration is 6 ns and the energy density is constant within the pulse. What is the spatial length of the pulse
A shopper in a supermarket pushes a cart with a force of 37.5 N directed at an angle of 17.0° downward from the horizontal. Find the work done by the shopper on the cart as he moves down an aisle 45.0 m long
If the company is presently selling 45,000 units, but plans to spend an additional $108,000 on an advertising program, explain how many additional units must the company sell to earn the same net income it is now making?
A diver on a diving board is undergoing simple harmonic motion. Her mass is 55.0 kg and the period of her motion is 0.800 s. What is his mass if the mass of the board is negligible
The speed of a bobsled is increasing because it has an accelerationof 2.4m/s^2. At a given instant in time, the forces resistingthe motion, including kinetic friction and air resistance, total450 N. The mass of the bobsled and its riders is 270kg. Wh..
An engine performs 4000 joules of work in 10 seconds. What is the power output in kilowatts and in horsepower
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1380 Hz. What is the speed of the bird
High-voltage power lines are a familiar sight throughout the country. What is the resistance of ten kilometers of this wire
A lens has diameter of 30 mm, What is the lens' theoretical resolution limit (in nm) when it is used in air with light of 550-nm wavelength
American football uses a field that is 100.0 yd long, whereas a soccer field is 100.0 m long. Which field is longer, and by how much
"Romeo tosses a pebble at Juliet's window to wake her. Unfortunately, Find the magnitude and direction of the pebble's velocity as it leaves Romeo'shand
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