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A hollow cubical box is 4.09 m on an edge. This box is floating in a lake with one-third of its height beneath the surface. What is the depth of the water in the box at the instant the box begins to s
Suppose you wish to make a solenoid whose self-inductance is 1.6 mH. How many turns of wire are needed
Like all stars, our sun converts mass into energy which radiates (spherically) in all directions, Calculate the rate at which the sun is losing mass
a 100g marble (modeled as a solid sphere with radius 2cm) rolls without slipping down a ramp. How tall is the ramp
A positively charged particle of mass 6.20 multiply.gif 10-8 kg is traveling due east with a speed of 50 m/s, What is the magnitude of the magnetic force acting on the particle
A block just begins to slide down a ramp after being elevated to an angle of 40 degrees. What is the coefficient of static friction
A planet has two small satellites in circular orbits around the planet. the first satellite has a period 18.0 hours, what is the period of the second satellite
A photon produces a proton-antiproton pair according to the reaction y ---> p+P. What is the minimum possible frequency of the photon
A 70 kg mountain climber dangling in a crevasse stretches a 50-m-long, 1.0-cm-diameter rope by 8.0 cm. What is Young's modulus for the rope
According to the shop manual, when drilling a 13.0-mm-diameter hole in wood, For a 13.0-mm-diameter drill bit turning at a constant 1400rev/min , find the maximum linear speed of any part of the bit
Two hikers begin on opposite sides of a circular lake and walk around the lake in the same direction. How far does the faster hiker walk before catching up to the slower one
An object is placed 30 cm from a converging lens forms an image 40 cm from the lens. is the image which is formed real or virtual
Calculate the center to center distance between the wires when the force of gravity and magnetic force are balanced Fg=Fm
A carpenter uses a tape measure to measure the lenght of one side of a room. However , a large bookcase on one side of the room prevents him from measuring the full lenghth. Is this random or system
The motor in a refrigerator has a power of 156 W. If the freezing compartment is at 268 K and the outside air is at 302 K, what is the maximum amount of energy
A 3.5-kg block of iron (c=0.11 kcal/kgoC) that has been brought to a temperature of 1,063oC is placed on top of a 2.5-kg block of ice (c=0.5 kcal/kgoC) that has been cooled to -50oC
A 150 ohm resistor, a 30 mH inductor and a 2 uF capacitor are connected in series with a 120 V rms source at 1500 Hz. What is the impedance of this circuit
A photon whose energy is 2.6 Ã- 10âˆ'14 J is scattered off an electron at an angle of 56â. What is the wavelength of the scattered wave
X-rays are scattered from electrons in a carbon target. The measured wavelength shift is 0.00099 nm. Calculate the scattering angle
A magnifying lens with a focal length of 5 cm is held 4 cm from an object that is 1cm tall. Find the image distance from the lens
A 120 V rms voltage at 60 Hz is applied across a 10 uF capacitor and an unknown resistor. what is the value of the resistor
The work function for potassium is 2.24 eV. If potassium metal is illuminated with light of wavelength 300 nm
A certain light source is found to emit radiation whose peak value has a frequency of 8.28 Ã- 1014 Hz. Find the temperature of the source
You measure the length of a futuristic car to be 3.50m when the car is at rest relative to you. what result do you get
Describe the motion of a ball in a bus when the bus accelerates foward as it might be perceived by a person standing on the ground outside the bus