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A car can decelerate at -4.00 m/s2 without skidding when stopping on a level road. What would be the magnitude of its deceleration if the road were inclined at 15° uphill?
A solution of diethylamine has a hydroxide ion concentration of 0.012 M. What is the concentration of H + ? I believe diethylamine is (CH3CH2)2NH.
When a 4.32 kg object is hung vertically on a certain light spring that obeys Hooke's Law, the spring stretches 2.92 cm.
A series RC circuit has a time constant of 0.820 s. The battery has an emf of 50.0 V, and the maximum current in the circuit is 480 mA. (a) What is the value of the capacitance(F)? (b) What is the c
A uniform board has a mass of 25 kg and is 4 m long. The board is resting on a fulcrum that is 1.3 m from one end. What mass of brick must be placed on the end of the board so that the board will ba
A tapering telephone pole is 10 m long and has a mass of 300 kg. Its center of gravity is 3m from the thick end. What force must be exerted to hold the thin end off the ground so that the axis of th
A volume of 5.0 L of polluted air at 18.0 degrees celsius and 747mmHg is passed through lime water [an aqueous suspension ofCa(OH)2], so that all the carbon dioxide present is precipitated as CaCO3.
A 11.04lb cat , initially standing one sled , jumps across to the other sled and immediately jumps back to the first sled . For both jumps the cat's speed is 6.2 ft/s relative to the ice. Find the m
Ethyl alcohol, C2H5OH, can be made by the fermentation of glucose,C6H12O6, as indicated by the equation: C6H12O6(aq) ---> 2C2H5OH(aq) + 2CO2(g)
Two parallel wires with centers separated by 8.0 mm each carry 15 A in the opposite direction. Find the magnitude of the force per unit length on each wire.
100 ml of an acid solution and 100 ml of a base solution were combined in a calorimeter. A temperature change of 7.5 degrees c was measured. the density of the final solution was measured to be 1.04
The driver of a 1300-kg car moving at 17 m/s brakes quickly to 11 m/s when he spots a local garage sale. (a.) Find the change in the car's kinetic energy.
Two long parallel wires each carry 2.4 A in the same direction, with their centers 2.0 cm apart. A) Find the magnitude of the magnetic field halfway between the wires.
a) Calculate the impulse delivered to the ball during impact b) If the ball is in contact with the slab for 1.216 x 10^-3 s, find the average force on the ball during impact.
A 35-kg crte rests on ahorizontal floor, and a 65-kg person is standing on the crate. Determine the magnitude of the normal force that the floor exerts on the crate.
A 6.0-g sample of [Ni(H2O)6]Cl2 is dissolved in aqueous solution. If an excess of ethylenediamine (en) is added to the solution, solid [Ni(en)3]Cl2. H2O forms. What is the theoretical yield of pr
A resting ball of mass 552g is struck horizontally by a mallet imparting an impulsive force give by F(t)= -552 for t1<t<t2 and F=0 otherwise. Here F is in Newtons and t is in milliseconds with
An electric motor has a 920-turn coil on its armature. The coil is circular with diameter 19 cm and carries 11.5 A. Find the maximum torque on the coil when it rotates in a 1.90 T magnetic field.
Find the torque on the loop in a 2.0 T magnetic field directed in the plane of the loop.
A boat has a mass of 6800 kg. its engines generate a drive force of 4100 N, due west, while the wind exerts a force of 800 N, due east, and the water exerts a resistive force of 1200 N due east. Wha
In a rocket motor fueled with butane, C4H10,how many kilograms of liquid oxygen should be provided with each kilogram of butane to provide for complete combustion?
In a lab when I mixed 5mL of water with 5mL of ethanol, the temperature rose to 26.5 celcius, and when I mixed 5mL of waterwith 5mL of glycerin, the temperature also rose to 26.5 celcius.
What angle should the wire make with the magnetic field so that the wire experiences a force per unit length of 1.90 N/m? Assume that the angle is sharp.
A pellet -gun fires 15.2 pellets per second , each of mass 55.2 g, at a speed of 310m/s . A rigid wall stops the pellets. a) What is the momentum of each pellet ?
Lysozyme is an enzyme that breaks down bacterial cell walls. It isfound in tears and egg whites and elsewhere. A solution containing 0.150 g of lysozyme in 210 mL of water solution has an osmotic pr