Questions tagged 'Physics'
312 questions
Feb 18, 2025
Physics practice problem help! A baseball of mass m1 = 0.35 kg is thrown at another ball hanging from the ceiling by a length of string…?
A baseball with a mass of m1 = 0.35 kg is thrown at a second ball hanging from the ceiling by a length of string, L = 1.05 m. The second ball, with a mass of m2 = 0.62 kg, is initially at rest while t...
How much upward force does support 1 and support 2 exert on the beam?
How much upward force do Support 1 and Support 2 exert on the beam? Consider a rigid beam that is 3.0 meters long and has a mass of 110 kg. It is supported at both ends. A student weighing 90 kg stan...
Suppose a sound wave and a light wave have the same frequency. Which of the following is true?
Suppose a sound wave and a light wave have the same frequency. Which of the following statements is true? a. The sound wave has a longer wavelength and travels at a slower speed. b. The light wave ha...
Rank these throws based on the maximum height?
Please rank the following throws based on the maximum height reached by the ball, from largest to smallest. If any throws reach the same maximum height, please indicate them as equivalent. The throws...
Feb 16, 2025
how many amps does a 60 watt light bulb draw?
How many amps does a 60-watt light bulb draw when connected to a standard electrical supply?
Air is 78.1% nitrogen, 20.9% oxygen, and 0.934% argon by moles. What is the density of air at 22 °C and 760…?
Air consists of 78.1% nitrogen, 20.9% oxygen, and 0.934% argon by mole fraction. What is the density of air at a temperature of 22 °C and a pressure of 760 torr? Please assume ideal gas behavior for t...
Finding the length of a uniform steel bar given period?
A uniform steel bar swings from a pivot at one end with a period of 2.1 seconds. How long is the bar? The problem seems straightforward, but my online homework platform keeps indicating that my answer...
An archer pulls her bowstring back 0.400 m by exerting a force that increases uniformly from zero to 300 N.?
An archer pulls her bowstring back by 0.400 m, exerting a force that increases uniformly from 0 N to 300 N. (a) What is the equivalent spring constant of the bow, expressed in N/m? (b) How much work i...
If the initial gas pressure inside the balloon is 1.0 atm, what is the final pressure?Express your answer using two significant figures.?
A weather balloon rises through the atmosphere, causing its volume to expand from 4.9 m³ to 14 m³ as the temperature decreases from 19 °C to -11 °C. Given that the initial gas pressure inside the ball...
A stone is thrown vertically upward with a speed of 24 m/s?
A stone is thrown vertically upward with an initial speed of 24 m/s. A) What is the speed of the stone when it reaches a height of 13 meters? B) How much time does it take for the stone to reach this...