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A 32 N force, parallel to the incline, is needed to push a certain crate at constant velocity up a frictionless incline which is 30 degrees over the horizontal. Determine the mass of crate?
Calculate the molecular formula for this compound. Determine the numbers of moles of hydrogen atoms are in one mole of molecules (or equivalently discuss how many hydrogen atoms are in one molecule)
If it took 7.85 of a.102 M H2SO4 to reach the equivalence point, given a 10.0 mL sample of an unknown Ba (OH)2 solution.
Discuss why p-nitro phenol is a stronger acid than the phenol itself. Would p-methoxyphenol be a stronger or weaker acid than phenol? Explain.
Explain what percentage of hydrogen is present in a 2-g sample of hydrogen chloride? A 1-g sample of the compound hydrogen chloride was determined and found to be 97.3 percent chloride and 2.
Make sure in the first case, the t-butyl group and the ethyl group are cis to each other and the vinyl group is trans to these two groups. "There are two stereoisomers of1-t-butyl-
Compute the amount of mechanical work essential to lift a 120 kg barbell 2.00m (iv) He drops the barbell to the floor and lifts it continually.
A mixture of 25% hydrogen and 75% propane is burned with the 25% excess air. Fractional conversions of 85% of the hydrogen and 90% of the propane are achieved; of the propane that reacts, 95% reacts
Determine the mass percent of sulfuric acid in the original battery acid sample (assume sulfuric acid completely ionizes both protons in this solution)
Of the 18 who tested positive, three finished in top 10. 25 cyclists tested negative. How many cyclists who tested negative didn't finish in top 10? How many cyclists were tested?
The electric field within a 30 cm long copper wire is around 0.010 V/m. Determine the potential difference among the ends of the wire? Determine the current in the wire? The diameter of the wire is
What effect does the ph of the solution have on the reactivity of the phenol? In this reaction, diazonium salts couple with phenols in slightly alkaline solution.
How high would it go in comparison to the tennis ball if the same amount of energy were imparted to a ball the same size as a tennis ball, but of twice the mass.
A car having mass 1.20 x 103 kg is primarily moving on a level road at a speed of 22.0 m/s. Calculate the raise in temperature of the brakes, supposing that all the mechanical energy ends up as int
A crate of 11 kg is pulled through a force 150N (parallel to the incline) up a rough 35 deg incline. The crate consists of an initial speed 1.65 m/s. The crate is pulled a distance of around 8.21 m
Currently Jack has been in poor health and would like you to evaluate the estate tax must he die this year. Jack evaluates the taxable estate (after deductions) will be worth $5.4 million at the de
A satellite functions at an altitude of around 19,700 km and employs communication frequencies of 1609.58 MHz. Determine the gravitational frequency change with respect to the Earth.
At what average rate would heat have to be eliminated from 1.5 L of water to decrease the liquid's temperature from 20 deg C to its freezing point in around 3 minutes?
The two diffraction gratings, A and B, are positioned at the similar distance from the observation screens. Light with the same wavelength is employed for each.
A centripetal acceleration addict rides in the uniform circular motion having period T = 4.30 s and radius r = 3.00 m. At one moment his acceleration is a = (5.00 m/s2) + (-4.00 m/s2). At that insta
Starting in year five and continuing through year 10, income will rise $50K per year. Determine equivalent present worth, if interest rate is 12%?
Determine the speed of the blood in the aorta? Suppose that the speed of sound in human body is around 1540.
Determine what fraction of h is the maximum height to which the puck will mount back up the slope? Enter zero (0) when the first puck doesn’t go back up the slope.
Harry currently graduated in engineering. His employer will provide him the raise of $2500 per year if he passes FE (Fundamentals of Engineering exam). Over the career of 40 years, determine PW of t
In a game of pool the cue ball, with incoming speed vo, collides elastically with he eight ball, which is at rest. When the outgoing speed of the cue ball is around 4vo/5, determine the angle among