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One ton of coal is burned by a power plant every minute. The energy produced when one kg of coal is burned is 3.2 x 10^7 joules. calculate the efficiency of the power plant
the altitude of a hang glider is increasing at a rate of 6.80 m/s. At the same time, Find the magnitude of the glider's velocity
According to valence bond theory, the triple bond in ethyne (acetylene, C2H2) consists of A) three sigma bonds and no pi bonds B) two sigma bonds and one pi bond C one sigma bond
A cube of mass m1 = 6.5 kg is sitting on top of another cube of the same size and mass m2 = 1.1 kg while they are both in free-fall
Which of the following has the most mass: air in a 6516-ft3 house (density = 1.16 kg/m3), a 248-N bag of cement, a 75.8-kg person or a 9.71-lb cat, What is the mass of the cat
How does electron configuration work. If I have [Ar]3d^5 as an example how do know what it actually equals
Reluctant diver Dave is hanging by his fingertips at the high-dive board, a distance of 8m from the water. His friend pries his fingers from the board, How long does it take Dave to reach the water
Construct a delta H and delta S table, including the four possibilities associated with the two possible signs for each of delta H and delta S. Discuss the resulting sign of delta G and the spontane
The second law states that the entropy of the universe (system and surroundings) increases in a spontaneous process : delta Ssyst + delta Ssurr is greater than or equal to 0.
You're driving down the highway late one night at 18 m/s when a deer steps onto the road 45m in front of you. What is the maximum speed you could have
A 6-kg stone is tied to a 0.79-m long string and swung around a circle at a constant angular velocity of 19 rad/s
What is the ratio of enantiomers of 2-octanol in the product mixture? 55% (S) and 45% (R). However, I am not sure how to draw the structure of the major enantiomer produced in this reaction. Indicat
A pendulum bob of mass m is attached to a massless string of length L. If the bob is released from rest at a horizontal position, What is the tangential acceleration of the bob
Calculate the energy required to heat 1.30 kg of ethane gas (C2H6) from 27.0°C to 78.0°C first under conditions of constant volume and then at a constant pressure of 2.00 atm.
Harry is hospitalized with bacterial pneumonia.
The amount of nut burned was 0.9905g. How many of these nuts would a 64kg person have to eat to obtain enough energy to bike (racing)for 30min? The amount of bicycling (racing) is 0.127
An infinitely long solenoid of radius 2.5cm and 100 turns/cm carries an initial current of 1 A. what is the electromotive force induced in the loop
Which of the following would increase the amount of oxygen undergoing net diffusion from the lungs into the blood?
A projectile os fored at 35 degrees above the horizontal. Its initial speed is equal to 100 m/s. What is the maximum height reached by the projectile
Regarding the treatment and health care of Sam Levine.
The block in the figure oscillates sinusoidally between x = +a and x = %u2212a. The coordinate is x(t) = a cos(wt). Calculate the maximum speed
My car has rear defrosters that are made of 13 wires embedded into the rear window. They can melt a thin layer of ice, What is the cross-sectional area of each wire
How many questions are on the CNRP Pharmaceutical Sales Exam?
For the following battery: Cd(s) | CdCl2(aq) || Cl-(aq) | Cl2(l) | C(s) Write the reduction half-reaction occuring at the C(s) electrode. (Include physical states of reactants and products.) From wh
Cost of electricity varies but typical values are around $0.15/kWh. Using this price, calculate the cost of making a piece of toast in 3.00 min with a 980W toaster