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A 60-kg student traveling in a car with a constant velocity has a kinetic energy of 1.2 X 104 J. What is the speedometer reading of the car
While rearranging a dorm room, a student does 400 J of work in moving a desk 2.0 m. What was the magnitude of the applied horizontal force
A proton is located at the origin, and a second proton is located on the x-axis at x = 5.10 fm (1 fm = 10-15 m). If the two protons are released from rest and the alpha particle remains fixed, calcula
Element x reacts with Hydrogen gas at 200 deg celsius to form compound Y. When y is heated to a higher temperature, it decomposes to the element x and hydrogen gas in the ratio of 559ml of H2
K = 0.040 for the reaction below at 450 C. If the reaction starts with 0.20 M Cl2 and 0.20 M PCl3, what concentration of PCl5 will be present at equilibrium. PCl5(g) <====> PCl3(g) + Cl2(g) a)
One of the most powerful cranes in the world operates in Switzerland. It can slowly raise a load of M = 5230.0 tonnes to a height of h = 12.0 m, How much work is done by the crane
A 0.24-kg ball on a stick is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, Find the tension in the stick
Before the reaction began, the concentrations of the reactants were 0.060 M of SO2 and 0.050 M O2. After the equilibrium is reached, the concentration
You close the top of your straw with your thumb and lift the straw out of your glass containing Coke. How large is the error (in per cent) if you neglect the air in the straw
A satellite circles the earth in an orbit whose radius is 3.26 times the earth's radius. What is the period of the satellite
how many mM of nitrogen atoms in 1g/L of (NH4)2SO4. molecular mass of (NH4)2SO4 is 132.14g/mol
On a banked race track, the smallest circular path on which cars can move has a radius of 106 m, compute the largest speed at which cars can move on this track without relying on friction
A 1.07 g sample of sulfur was burned in a bomb calorimeter whose calorimeter constant is 2.03 kcal/°C. If the resulting temperature change was 1.17 °C, what is the molar heat of combustion f
A particle leaves the origin with an initial velocity v(bold)=2.4m/s xhat, How far does the particle move in the x direction before it turns around
The final temperature of the system is 27.3°C. The resulting 0.500 M NaCl (aq) has a density of 1.02 g/ml, and a specific heat of 4.02 J/g-deg. What is the value of ?H in kJ/mole or the reaction
Students in a fraternity house want to be able to spray water 25 m across their neighbor's yard onto a patio. What size nozzle do they need
How to do I calculate the pH of original buffer given mass of NaC2H3O2*H2O (FW =136 g/mol) = 3.507 g
An electron with an initial speed of 4.90×105m/s is brought to rest by an electric field. What was the potential difference that stopped the electron
a spring has a constant k=8.75 N/m. if the spring is displaced 8.150 m from its equilibrium position, what is the force that the spring exerts
Consider a sample of diatomic ideal gas which is taken through the following cycle: A constant pressure process that doubles the volume of the gas, What is the efficiency of this cycle
Suppose an astronaut has landed on Mars. Fully equipped, the astronaut has a mass of 125 kg, What is the acceleration due to gravity on Mars
What is the force of gravity between two 1000-kg cars separated by a distance of 25m on a interstate
A horizontal force of 250 N is applied to a stationary wooden box in one direction, What additional force is needed for the box to remain stationary
Two small metallic spheres, each of mass m = 0.25 g, are suspended as pendulums by light strings from a common point as, compute the magnitude of the charge on each sphere
In this section assume the temperature is 20unless directed otherwise. A submarine 79 deep emits a sonar (sound) wave. How deep is the ocean at that point