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A daredevil decides to jump a canyon. Its walls are equally high and 11 m apart. He takes off by driving a motorcycle up a short ramp sloped at an angle of 24°. What minimum speed must he have i
The cross section area of the tank is 1 m^2 if the height of the tank water above the hole is maintained at 10 m what is volumetric flow rate out of the hole.
A 5.70 102 kg hot-air balloon takes off from rest at the surface of the earth. The nonconservative wind and lift forces take the balloon up, doing +9.70 104 J of work on the balloon in the process.
In some ways, all these atoms resemble a Bohr hydrogen atom with its electron in a high-numbered orbit. Explain why you might expect it to be the case?
Assuming all factors other than the activation energy remain the same, by how much does the rate of the reaction increase?
A tennis player receives a shot with the ball .06 kg traveling horizontally at 50 m/s and returns the shot with the ball traveling horizontally at 40 m/s in the opposite direction. what is the impu
What is the concentration (M) of Cd2+(aq) in the sample? Can you use the equation C= n/ V, find n , which is n=m/M and then i dont know what to do.. use avogadro's equation and find out the energy per
A billiard ball moving at 5.00m/s strikes a stationary ball of the same mass. After the collisions, the fist ball moves at 4.33m/s and at an angle of 30.0 degree with respect to the original line o
A buffer consisting of equal amounts of a weak acid and its conjugate base has a pH of 4.4. A small amount of NaOH was added to this buffer solution. How will this affect the pH of the buffer?
When you exercise, lactic acid, CH3CH(OH)COOH, is produced as a product of metabolism. The lactic acid enters the bloodstream. explain how the buffer acts to neutralize the lactic acid.
An ocean liner leaves New York City and travels 19.2 ° north of east for 186 km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the shi
You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip. How much force must you exert to keep the pole motionless in a horizontal position?
A 3.00 x 102-kg piano is being lifted at a steady speed from ground level straight up to an apartment 10.00 m above the ground. The crane that is doing the lifting produces a steady power of 4.00 x
Calculate the force of gravity between a human child (mass = 32 kg) and the planet Mars (mass = 6.4 1023 kg), when Mars is at its closest to Earth (distance = 8. 1010 m).
H2CO3, to carbon dioxide, CO2, and water, H2O. explain why breathing faster helps to eliminate excess lactic acid when you exercise.
Complete combustion to form carbon dioxide and water requires 1.120mol of oxygen. Calculate the mass percent of ethane in the original mixture.
A car is driven around a curve with a radius of 0.320 km and the car has a speed of 28 m/s. What is the centripetal acceleration?
A submarine dives 100.0 m at an angle of 8.0° below the horizontal. What are the horizontal and vertical components of the submarine's displacement? (Assume that upward and the direction of the
A rate law and activation energy. Describe the chemistry that was occurring in the experiment between the time when solution A and B were mixed.
A 5 kg steel ball strikes a wall with a speed of 10.7 m/s at an angle of 59° with the surface. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.151 s,
A 63 kg boy and a 47 kg girl use an elastic rope while engaged in a tug-of-war on an icy, frictionless surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find the acceleration of
Historically, the solid residue that is left after the methylene chloride solution is evaporated has a lower melting point that its literature value, due to impurities. Explain what impurities are
A girl on a sled coasts down a hill. Her speed is 7.6 m/s when she reaches level ground at the bottom. The coefficient of kinetic friction between the sled's runners and the hard, icy snow is 0.040,
Suppose the uranium nucleus was at rest just before the decay. If the α particle is emitted at a speed of 1.74×107 m/s, what would be the recoil speed of the thorium nucleus?
What is the equilibrium partial pressure of SO3 in the mixture? At 900 K the following reaction has Kp=0.345: