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Shadow is 5 feet long. Angle of elevation from tip of shadow to lamp is 50. To nearest foot, how much lamppost is feet tall?
To save for the new car you put 200 the month into acount earning intrests at 3% per year, compounded continously. How much money do you possess 2 years after first deposit, right before you make depo
Where must you place a (1.8 kg) half gallon of milk, relative to the left end of the basket, so that the center of mass of groceries is at the center of the basket?
Find out how far from the center of the planet is the planet-moon center of mass?
Annual deposits of 2700 dollars are made in the bank account earing 8% intrerest per year. Find the balance in account right after 15th depist if interest is computed annually?
Pinky consists of a mass of 3.36 kg sits on a pump handle at a distance 33.19 cm from the axis of rotation. By using this information, find out the torque of Pinky and the handle if Pinky is on top
Clothing consists of a static coefficient of friction against steel in the range .6 to 1.0 and a kinetic coefficient in the range of .4 to .7. Determine the minimum rotational frequency in rpm, for
A sample of helium gas of 2.60 mol initially at 300 K, and 0.400 atm is compressed isothermally to 1.00 atm. Note that the helium behaves as the ideal gas. (i) Determine the final volume of the gas.
An ideal gas primarily at 345 K undergoes an isobaric expansion at 2.50 kPa. The volume rises from 1.00 m3 to 3.00 m3 and 13.2 kJ is transferred to the gas by heat. (i) Determine the change in interna
When the ice melts than what volume of liquid water will form? And after the ice melts how much water could you add to the container? If you have a 250-mL container wholly filled with
Jose used a=-pi/8 and Aparna a=3pi/8 used. Students got different equations in x' and y', but both were right. Describe how this is possible.
The heat capacity of a bomb calorimeter was calculated by burning 6.79 g of methane where the energy of combustion =-802 kJ/mol CH4 in the bomb and the temperature changed by 10.1°C.
Explain at what mass of this substance must evaporate to freeze the 200 g of water initially at 15 C. Heat of fusion of water is 334 and specific heat 4.18. Heat of vaporization 289, and th
You have agreed to make payments of $250 per month plus the additional 1% interest on unpaid balance of loan. Determine total amount of interest paid over term of loan.
Calculate the rules for naming hydrocarbons? If we substitute some of the hydrogen atoms with, for example, chlorine atoms then how do those rules change?
Determine the number of pounds of N2 and H2 are required to make 1billion lb of ammonia if 1 g mole of N2 and 3 g mole of H2 are consumed to make 2 g mole of NH3.
A uniform rod rotates in the horizontal plane around a vertical axis through one end. The rod is 6.00 m long, weighs 10.0 N and rotates at 240 rev/min. Compute (i) its rotational inertia around the
A hiker having weighs 985 N is strolling through the woods and crosses a small horizontal bridge. The bridge is uniform and weighs 3610 N, and rests on the two concrete supports one at each end. He
System 3x-y=-9 and x+2y=2 may be solved algebraically by using several different methods. Illustrate the first step in solving system using each method below.
At some other time, the velocity comprises of only y component. When the force is unaffected, and the instantaneous power is -6.4 W, determine the velocity of the object just then? (Provide your ans
The electric field among two square metal plates is 120 N/C. The plates are 1.4 m on a side and are separated by the 5.0 cm. Determine the charge on each plate (suppose equal and opposite)? Avoid ed
If on the ground, Ian’s weight is 644N. When Ian is on the elevator, his apparent weight is 741N. Determine the total force on the system (Ian and the elevator) if their combined mass is 1050
A concave mirror consists of a focal length of 23.0 cm. The distance between an object and its image is 40.3 cm. Determine (i) the object and (ii) the image distance supposing that the object lies b
White light hits a diffraction grating and a prism. A rainbow appears on a wall just beneath the direction of the horizontal incident beam in each case. Find out the color of the top of the rainbow
ii) When the rod has a resistance of 18 ohms and the rails and connector have negligible resistance, then determine the current in the rod? iii) At what rate is energy being transferred to the therm