Questions tagged 'Physics'
312 questions
Physics Frequency Question?
Erin is running late to her physics class and walking down the hallway as the bells are ringing. There are two bells in the hallway: one located at the far end and another right outside the classroom...
Which one of the following does not accurately describe the universal gravitational law?
Which of the following statements does not accurately describe the law of universal gravitation? a. Every object in the universe that has mass attracts every other object in the universe that has mass...
Calculate the wavelength lambda for gamma rays of frequency f= 6.70×10^21 Hz express answer in metres .?
Calculate the wavelength (lambda) for gamma rays with a frequency of f = 6.70 × 10^21 Hz. Please express the answer in meters. I would appreciate it if you could provide the formula used to calculate...
A bicycle wheel has an initial angular velocity of 1.50 rad/s.
A bicycle wheel has an initial angular velocity of 1.50 rad/s. a) If its angular acceleration is constant and equal to 0.300 rad/s², what will its angular velocity be at t = 2.50 s? b) What angle ha...
A roller coaster moves 200 ft horizontally, then rises 135 ft at an angle of 30.0° above the horizontal. ?
A roller coaster moves 200 feet horizontally and then rises 135 feet at an angle of 30.0° above the horizontal. Next, it travels 135 feet at an angle of 40.0° below the horizontal. Using graphical tec...
6. which one of the following statements does not accurately describe vibrations?
Which of the following statements does not accurately describe vibrations? a. Forced vibrations, such as those between a tuning fork and a large cabinet surface, result in a much lower sound than that...
Calculate the force of gravity on a spacecraft 12800 km (2 earth radii) above the Earth’s surface if…?
What is the force of gravity acting on a spacecraft with a mass of 1,700 kg when it is 12,800 km (equivalent to 2 Earth radii) above the Earth's surface?
Suppose that 1.15g of rubbing alcohol (C3H8O) evaporates from a 67.0g aluminum block. If the aluminum block is?
Suppose that 1.15 g of rubbing alcohol (C3H8O) evaporates from a 67.0 g aluminum block. If the aluminum block is initially at 25 degrees Celsius, what is the final temperature of the block after the e...
A 1300-N crate rests on the floor. How much work is requred to move it at constant speed…?
A 1300-N crate rests on the floor. How much work is required to move it at a constant speed (a) 4.0 m along the floor against a friction force of 230 N, and (b) 4.0 m vertically? I’m unsure how to app...