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How many 104 W lightbulbs can you use in a 113 V circuit without tripping a 17 A circuit breaker? (The bulbs are connected in parallel, which means that the potential difference across each lightbu
Suppose that the mirror described in Part A is initially at rest a distance R away from the sun. What is the critical value of area density for the mirror at which the radiation pressure exactly can
The sphere hangs directly down. When the electric field is applied, the sphere hangs at an angle of theta = 18.5 degrees. Calculate the magnitude of the electric field.
A current of 10.0 mA is maintained in a single circular loop with a circumference of 1.30 m. A magnetic field of 0.620 T is directed parallel to the plane of the loop. What is the magnitude of the t
A rocket of total mass 3700 kg is traveling in outer space with a velocity of 110 m/s toward the Sun. It wishes to alter its course by 35.0 degrees, and can do this by firing its rockets briefly in
If a curve with a radius of 83m is perfectly banked for a car traveling 65km/h, what must be the coefficient of static friction for a car not to skid when traveling at 90km/h
what is the potential difference that stopped a proton with initial speed of 375,000 m/s brought t rest by an electric field.
Two charges - 16 microcoulombs and + 49 microcoulombs lie on a straight line. Identify the general region where the electric field is zero. Is it to the right, left, or between the charges?
What are the two main mechanisms that the planet Earth uses to balance the water that goes up with the water that comes down over the Earth?
After dropping off supplies it flies to lake B, which is 220 km and 30.0° west of north from lake A. Graphically determine the distance and direction from lake B to the base camp.
A 7.5 kg object hangs at one end of a rope that is attached to a support on a railroad boxcar. When the car accelerates to the right, the rope makes an angle of 37? with the vertical The acceleratio
An air track has a block with a height h=12.0cm under one support. The other support is 3.50m away. What is the angle of inclination theta?
The coefficient of kinetic friction for a 25 bobsled on a track is 0.10. What force is required to push it down a 5.0 incline and achieve a speed of 64 at the end of 75?
A 0.450-kg ice puck, moving east with a speed of 3.00 mis, has a head-on collision with a 0.900-kg puck initially at rest. Assuming a perfectly elastic collision, what will be the speed and directi
A pilot, whose mass is 80.0 kg, makes a loop-the-loop in a fast jet. Assume that the jet maintains a constant speed of 125 m/s and that the radius of the loop-the-loop is 0.557 km. What is the appa
a plane is flying southeast at 215 km/h. Suddenly there is a wind from the north at 75km/h. What is the plane's new velocity with respect to the ground in standard position.
A rifle is aimed horizontally at a target 53 m away. The bullet hits the target 2.5 m below the aim point. what is the time takes and the speed?
A thin circular disk of radius R rotates with angular speed w, about an axis through the centre of the disc and perpendicular to the plane of the disc. A uniform magnetic field B acts parallel to t
A grindstone of radius 4.0m is initially spinning with an angular speed of 8.0 rad/s. The angular speed is then increased to 10 rad/s over the next 4.0 seconds. Assume that the angular acceleration
A two-slit pattern is viewed on a screen 1.10 m from the slits. If the two fifth-order minima are 76.5 cm apart, what is the total width of the central bright fringe?
A 1.05 liter flask contains a certain quantity of ideal gas at 310 K. Then an equal number of molecules of the same gas is added to the flask, after which the absolute pressure is 1.35 times its or
A cubical box has six faces, each 20 cm × 20 cm. The flux through each face is (the sides are labeled like a die, sides 1 and 6 are opposite to each other, as are 2 and 5, and 3 and 4. Find th
A volume of nitrogen gas has a density of 1.22 kg/m3 and a pressure of 1.18 atm. Find the temperature of the gas and the rms speed of its molecules.
A typical nuclear fission power plant produces about 1.00 GW of electrical power. Assume that the plant has an overall efficiency of 35.0% and that each fission produces 200 MeV of thermal energy.
A tank having a volume of 0.100 m3 contains helium gas at 160 atm. How many balloons can the tank blow up if each filled balloon is a sphere 0.300 m in diameter at an absolute pressure of 1.25 atm?