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A bolt drops from the ceiling of a moving train car that is accelerating northward at a rate of 2.09 m/s2. What is the acceleration of the bolt relative to the train car
A bungee jumping mime is attached to a bungee cord 25.0 m long. The mime is in freefall until he gets to the end of the bungee, Find the maximum speed attained by the mime
A disgusted physics student wads up her homework and throws it downward into a trash can. with what speed was the homework hurled
Two point charges each have a value of 30.00 x 10^-3 and are separated by a distance of .04m what is the electric field midway between the two charges
Elimination competes with substitution reactions, especially at high temperature. If that's the case, why did I not see more elimination in my 2 reactions
A mortar* crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. How long will the mortar shell remain in the
I- is oxidized by MnO4- in basic solution to yield I2 and MnO2. The coefficient on H2O in the balanced redox reaction will be
Why does BrO2 have a free radical? explain the bonding that happen, and why it happens. Why does NO have a free radical? I know it's because there in one unpaired electron
Two protons are moving directly toward one another. When they are very far apart, What is the distance of closest approach
When the brakes of a certain car are applied, a deceleration of 6.0 m/s^2 is produced. How far will it travel in that time
A reaction has a standard free-energy change of -12.30 kJ mol-1 (-2.940 kcal mol-1). Calculate the equilibrium constant for the reaction at 25 °C.
Oppositely charged parallel plates are separated by 4.79 mm. How much work must be done on the electron to move it to the negative plate if it is initially positioned 2.06 mm from the positiveplate
The air in the ducts flows at 5.0 m/s, find the width of the ducts. (b) How big would the ducts need to be if the owner wanted the air to flow at 1.0 m/s
A fire truck attaches two fire hoses to a hydrant to fight a fire. Each hose has a diameter of 20 cm. The underground water pipe going to the hydrant has a diameter of 100 cm. In the underground pip
A potential difference of 100 mV exists between the inner and outer surfaces of a cell membrane. How much work is required to eject a positive sodium ion (Na+) from the interior of the cell
At a certain instant a particle (mass=0.5 kg) is moving in the +x direction with velocity 14 m/s. What is the magnitude of the momentum of the particle (in kg*m/s) at the end of this 0.15 second in
Write a balanced equation between citric acid (RCOOH) and sodium hydrogen carbonate
A uniform electric field of magnitude 415 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. What is the work done by the field on the electron
The confirmation test for Ag^+ is to add HNO3 to the [Ag(NH3)2] ^+ and see if a precipitate of AgCl forms. Where does the Cl ^ - come from. Why does adding HNO3 make AgCl precipitate
Assume that the sun radiates as a blackbody , if Lp=5000A for the solar spectrum, what is the surface temperature of the sun
suppose the driver in this example now slams on the brakes, stopping the car in 4.00s. find the acceleration and the distance the car traveled while braking
using planck's law, Evaluate the Stefan-Boltzmann constant and Evalute the constant in the wien displacement law
Four charges of equal magnitude Q = 65 nC are placed on the corners of a rectangle of sides D1 = 25 cm and D2 = 10 cm. calculate the numeric value for the vertical force
A swan can float on a lake with only 33% of its volume below the surface. What is the average density of the swan
Two capacitors give an equivalent capacitance of 10.00 pF when connected in parallel and an equivalent capacitance of 1.55 pF, What is the capacitance of each capacitor