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The ions will separate until they make an electric field that exactly balances the magnetic force. This electric field produces a voltage that can be measured. a. What force is felt by a singly ioni
A chemist measures the vloumes of 1.00 mole N2 and 1.00 mol SO2 and finds they differ by 0.30 L. Which gas produced the larger vloume? Do the results contradict the ideal gas law?
Devise an experiment to determine the amount of vitamin C in orange juice in an 8 oz glass, assuming that this is 8oz sample contains a day supply of vitamin C.
A Given substance is a white solid at 25 deg. celsius. it melts at 150 deg. celsius without decomposing, and the melt does not conduct electric current. what would be the classification of the subst
A student using a resonance tube determines the three resonances occus at distances of l1= 0.172m, l2=0.529m, l3=0.884m below the open end of the tube. The frequency of the tuning fork used is 480 H
Reasonable efficiency for converting chemical energy to electrical energy via combustion is 30%. Calculate how many pounds of coal must be burned to run your reading lamp for two hours of studying f
A beam of microwaves corresponds to a flux of ( 1.1x10^0 x 1020) photons per second with a wavelength of 2.0 cm. Calculate the power carried by the beam.
A solenoid that is 91.4 cm long has a cross-sectional area of 15.0 cm2. There are 1000 turns of wire carrying a current of 6.74 A. (a) Calculate the energy density of the magnetic field inside the s
Aspirin is a weak acid (pKa=3.5). When it enters the body, the undissociated form of the acid can freely permeate membranes where the dissociated ions cannot.
Find the tangential and centripetal acceleration at the top of the loop using the velocity from part A.
On combustion 2.4 gram of a compound of carbon, hydrogen and oxygen gave 3.52 gram of CO2 and 1.44g of H2O. The molecular mass of the compound was found to be 60 amu.
A spherical "hollow" is inside a sphere of radius, R, and mass, M. The surface of the hollow touches the right side of the large sphere and also passes through it's center.
A spring with a mass on the end of it hangs in equilibrium a distance of 0.420 m above the floor. The mass is pulled down a distance 0.060 m below the original position, released, and allowed to osc
If the sealed-tube manometer shown below had a height difference of 20.5 inches between the mercury levels, what is the pressure in the flask in torr and atmospheres?
A spring has a spring constant k 1/4 8.75 N/m. If the spring is displaced 0.150 m from its equilibrium position, what is the force that the spring exerts? Show your work.
In a experiment, you fill a 250 mL Erlenmeyer flask with the vapor. Why must the volume of the flask be determined by filling it with water? (Consider: just because a flask is labeled as a "250mL fl
A 50g ball travelling at 25 m/s is bounced off a brick wall and rebounds at 22 m/s. If the ball is in contact with the wall for 3.5 ms, what is the average acceleration of the ball during this time
A ball is launched into the air at an angle of 60° above the horizontal with a speed of 21.0 m/s. (a) What are the x- and y- components of the velocity of the ball 3.20s after it leaves the cann
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.30 m/s at an angle of 23.0° below the horizontal. It strikes the ground 3.00 s later. Find t
If electricity of sufficient voltage is passed into a solution of potassium iodide in water, a reaction takes place in which elemental hydrogen gas and elemental iodine are produced, leaving a solu
Hemoglobin contains .33% Fe by mass. A .200 g sample of hemoglobin is dissolved in water to give 10.0 ml of solution, which has an osmotic pressure of 5.5 torr at 25.0 degrees C. How many moles of
A 45.0-kg crate is dragged at constant velocity 8.20-m across a horizontal floor with a rope making a 30 degree angle above the horizontal. The coefficient of kinetic friction is 0.250. Find the wor
Suppose W is the energy transferred stretchinig a spring from 0 to 0.10 m. The amount of work done stretching the same spring from 0.10 m to 0.20 m is:
What is the change in voltage of a test charge in going from negatively charged plate to the positively charged plate while the dielectric is between the two plates?
How much work does he do during a 100 km race in which his average speed is 12.0 m/s? Often, the work done is expressed in nutritional Calories rather than in joules. Express the work done in part (