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A parallel-plate capacitor is connected to a battery. What happens to the stored enery if the plate separation is doubled while the capacitor remains connected to the battery? (Choose one and explai
Calculate the acetate ion concentration in a solution prepared bydissolving 8.90×10-3 mol of HCl(g) in 1.00 L of8.00×10-1 M aqueous acetic acid (Ka = 1.80×10-5).
A 45.0 kg crate is pushed up a frictionless 20° incline with a constant horizontal force. The magnitude of the acceleration of the crate is 0.100 m/s2. What is the magnitude of the horizontal fo
Atmospheric pressure decreases as you ascend into the mountains.The atmospheric pressure on the summit of Mount Everest (8846m, the highest elevation on earth) is only 30% of the standard atmospheri
Given one block has a mass of 100 kg and takes 6.2 seconds to reach the ground at a height of 1m, what the is mass of the other block attached to the pulley?
Consider a circuit consisting of two 1620-O resistors connected in series across a 61.8-V battery. (a) Find the voltage across one of the resistors.
On a smoggy day in a certain city the ozone concentration was 0.42 ppm by volume. Calculate the partail pressure of ozone (in atm) and the number of ozone molecules per liter if the temperature and
Two capacitors are connected to a battery. The battery voltage is V = 4.5 V, and the capacitances are C1 = 4.60 µF and C2 = 3.35 µF. Determine the total energy stored by the two capacito
A particle that has an 6.4-µC charge moves with a velocity of magnitude 5.2 x 105 m/s along the +x axis. It experiences no magnetic force, although there is a magnetic field present.
What is the total volume of gaseous products, measured at 397 degrees celsius and 726 torr, when an automobile engine burns 100g C8H18 (a typical component of gasoline)?
If the loop the car is currently on has a radius of 26.0 , find the minimum height so that the car will not fall off the track at the top of the circular part of the loop.
The freezing point depression of a 1.00% by mass solution of acetic acid in benezene is 0.441 celsuis. Kf for benzene = 5.12 celsuis/m; Calculate the formula mass of acetic usion these datas.
In the operating room, anesthesiologists use mass spectrometers to monitor the respiratory gases of patients undergoing surgery. One gas that is often monitored is the anesthetic isoflurane (molecul
What gauge pressure is required in the city water mains for a stream from a fire hose connected to the mains to reach a vertical height of 17.0 m ? (Assume that the mains have a much larger diameter
When a crown of mass 14.7 kg is submerged in water, an accurate scale reads only 13.4 kg. What material is the crown made of?
The maximum gauge pressure in a hydraulic lift is 17.0 atm. What is the largest size vehicle (kg) it can lift if the diameter of the output line is 24.5 cm?
When you stand on your head, what is the difference in pressure of the blood in your brain compared with the pressure when you stand on your feet if you are 1.85 m tall? The density of blood is 1060
When you go scuba diving in the ocean, below what depth could damage to your eardrum start to occur? The eardrum is typically 8.20 mm in diameter. Take the density of seawater to be equal 1.03 x 10^
Infrared lamps are used in cafeterias to keep food warm. How many photons per second are produced by an infared lamp that consume energy at the rate of 95W and is 14% efficient in coverting this ene
Suppose 1800J of heat are added to 3.6 mol of argon gas at a constant pressure of 120 kPa. Find the change in internal energy and temperature for this gas. Calculate the change in volume of the gas.
Suppose you call your dog with an average intensity level of 80 decibels (db). How much more sound energy would you have to put into each call to:
Refer to the intergative Example .Determine whether ornot n = 138 is a bound state .If it is ,what sort of state is it ?what is the radius of the orbit and how many revolutions per second does the e
Jet aircraft mechanics wearing ear protectors are able to converse with each other because the ear protectors block out the sound of the jet engine. What physics concept would account for this?
What effect would this electric field have on the particle of charge 2q?
You are given amixture of two liquids, A and B, to purify. The boiling point of Ais 75ºC and the boiling point of B is 195ºC.The composition ofthe mixture is 50% A and 50% B. You still dec