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What is the dielectric constant of the fluid? The capacitor is disconnected from the battery and then the fluid is removed. What is the new potential difference between the plates (in terms of V)
The speed of an object & the direction in which it moves constitute a vector quantity known as the velocity. An ostrich is running at a speed of 15.6 m/s in a direction of 42 degrees north of we
An electron is shot upward directly perpendicular to the lower plate of a parallel plate capacitor. Its initial velocity is 3.0 x 104 m/s. What must be the potential of the upper plate if the electr
Two charges are placed on the x axis: a +6.00 µC charge at x = 80.0 cm and a -3.00 µC charge at x = 0. Find E (electric field) on the x axis at (a) x = 30.0 cm and (b) x = 100.0 cm
Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. In a typical strike, the chameleon's tongue accelerates at a remarkable 250 for 20 , then travels at con
Knowing that the density of water is 1000 kg/m^3 she determines the density of the material of the necklace. Then she looks in her textbook to compare her answer to the density of gold which is give
Explosives are used to blow a rock apart. The explosion blows the rock into three fragments. Two fragments go off at a 107 degree angle to each other--a 3.9 kg piece at 24.2 m/s and a 6.2 kg piece a
The frequency of the siren sound she hears is 8.5 hz, and as soon as the car passes her by, the frequency of the siren sound she hears becomes 75 hz. Knowing that sound travels through air with the
A 15 m long string, of mass 1.8 kg is streched such that the tension in the string is 25 N. A wave of frequency 20 Hz is sent through the string, and is traveling to the left. A.) Find the speed of
A 0.5kg block at rest on a table is attached to a horizontal spring with a spring constant k=200 N/m. The spring is initially unstretched. A constant horizontal force of 20 N is applied to the bloc
The left ventricle of the heart accelerates blood from rest to a velocity of +23.2 cm/s. (a) If the displacement of the blood during the acceleration is +1.56 cm, determine its acceleration (in cm/s
A small block of ice is at 0 degrees celcius is subjected to 10g of 100 degrees celcius steam and melts completley. Show that the mass of the block of ice can be no more than 80 grams.
What is the angle the total electric force vector on charge 1 makes when measured counter-clockwise from the x axis in degrees?
On a particularly hot day, the temperature outside the home is 90 degrees F, and the temperature inside the home is maintained at 70 degrees F. If the heat pump consumes 500W of electrical power, at
Find the change in internal energy (J) of the gas. Find the work done (J) on the gas. Be sure to include the correct signs on the answers.
Find the change of internal energy (J) of the gas. Be sure to include the correct sign on the answer.
A 40-kg bookshelf requires a 100 N force to begin its motion. Once moving, it will requires a force of 60 N. What is the normal force?
a) If the velocity of a pitched ball has a magnitude of 50.0 m/s and the batted ball's velocity is 60.0 m/s in the opposite direction, find the magnitude of the change in momentum of the ball. b) F
What is the total mechanical energy of the system? What is the potential energy of the system when the block is 2 cm away from the equilibrium position?
The space shuttle orbits 320 km above the surface of the earth (a) What is the force of gravity on a 1.8 kg sphere inside the space shuttle?
A braking force of 6000 N was applied to a 100kg truck bringing it to a complete rest in 75m. a. how much work ws done in stopping the truck
A boat has a mass of 40,000kg. its engine gives it an acceleration of 0.2 m/s while it goes a distance of 100m from rest. a. what force does the eingine exert on ship?
At a water park, a 50kg lady goes down a water slide. At a point 3m above the plash-down pool, the lady passes a radar type speedometer that determines the lady's speed is 12m/s.
Suppose 5.00 g of hydrogen is separated into electrons and protons. Suppose also the protons are placed at the earth's North Pole and the electrons are placed at the South Pole. What is the resulti