Physics Modern Physics Level: Misc Level
Suppose that a photon has an energy of 5x10-19 J. What,s the wavelength of this photon? What is its frequency?
Physics Gravitation Level: Misc Level
What is the period of revolution of a 100 kg satelitte that is orbiting at a distance of 7.50x10 to the eight m from the center of the Earth?
Physics Gravitation Level: Misc Level
What is the speed of a 200 kg geosynchronous satellite that is orbiting 300 km above the Earth,s surface?
Physics Gravitation Level: Misc Level
A gravitational force of 1.50x10 to the negative seven N exists between two masses that are 2.0 m.If on mass is twice that of the other mass, what are two masses?
Physics Gravitation Level: Misc Level
Two students are sitting 1.5m apart. One student has a mass of 70.0 kg and the other has a mass of 52.0 kg. What is the gravitational force between them?
Physics Gravitation Level: Misc Level
Knowing that the Earth,s orbital radius is 1.49x10 to the 11th m and its period of revolution around the Sun is 1.00 years, calculate the period of revolution of the planet Mercury whose orbital radius is 5.79x10 to the10 th m. (Kepler,s law of periods formula)
Physics Rotational Mechanics Level: Misc Level
How fast does a car have to go in order to experience apparent weighlessness as it goes over a hill that has a radius of 30m?
Physics Rotational Mechanics Level: Misc Level
A rollercoaster car with a mass of 700 kg goes through loop with a diameter of 25m. What is the minimum speed the car has to go through the loop in order not to fall?
Physics Force & Laws Of Motion Level: Misc Level
what is the maximum speed a 1000 kg car can go through a curve with a radius of 75 m (without skidding)is the coefficient of friction between the tires and the road is 0.50?
Physics Circular Motion Level: Misc Level
Calculate the speed and acceleration on a point of a 15 3/4 vinyl record that has a diameter of 50.0 cm. (Note: 15 3/4 is the frequency that the record turns in RPM)
Physics Force & Laws Of Motion Level: Misc Level
A 92 kg car rounds an unbanke curve at a speed of 25 m/s. If the radius of the curve is 72m. what is the minimum coefficent of friction between the car and the road required so that the car does not skid.
Physics Force & Laws Of Motion Level: Misc Level
A car with a mass of 822 kg rounds an unbanked curve in the road at a speed of 100 km/h. If the radius of the curve is 1.05 km, what is the average centripetal force exerted on the car by the tires?
Physics Waves And Oscillations Level: Misc Level
A 0.025 kg object vibrates in simple harmonic motion at the end of a spring. If the maximum displacenent (amplitude)of the object is 3.0 cm, and the period of vibration is 0.50s, what is the maximum acceleration of the object?
Physics Waves And Oscillations Level: Misc Level
After a bungee jump, a 690N Student bobs up and down at the end of the bungee cord at a frequency of 0.23Hz. What is the spring constant of the bungee cord?
Physics Waves And Oscillations Level: Misc Level
A 0.70 kg object vibrates at the end of horizontal spring 9 k=75N /m) along a frictionless surface.What is the frequency of the vibration?
