A 27.0 kg wheel, essentially a thin hoop with radius 1.10 m, is rotating at 280 rev/min. It must be brought to a stop in 15.0 s. (a) How much work must be done to stop it? (b) What is the required average power?
Have you ever thought about how many vitamins and minerals are required in your daily diet? Can you obtain all the vitamins and minerals in your food or do you need to take a supplement? Perhaps you have asked yourself these questions before.
In a recent study on gender differences in education, a sample of 7 boys had a mean score of 17.6 and a standard deviation of 4.1 on a Standardized Math Test. A sample of 11 girls had a mean score of 20.8 and a standard deviation of 3.6 on the same test. What is the t-statistic for this data? (Use the sample of boys as Group 1.)
A hawk flies in a horizontal arc of radius 11.0 m at a constant speed 4.60 m/s.(a) Find its centripetal acceleration. m/s2(b) It continues to fly along the same horizontal arc, but increases its speed at the rate of 1.45 m/s2. Find the acceleration in this situation at the moment the hawk’s speed is 4.60 m/s.
Given a classical splitting of d orbitals using an octahedral frame work, which of the following metal ions are paramagnetic (Has an unpaired electron)? Assume all complexes are low spin. (Multiple Answer)
Mn(V)
Zn(II)
Cu(II)
Fe(II)
Co(III)
What is the relative velocity (in meters per second) between an observer on earth and a galaxy where the H-beta line of Hydrogen is measured to be 622 nm? (The wavelength of the H-beta line as measured at rest in the laboratory is 486 nm.)3.How fast is the typical oxygen molecule (with a mass of 5.31e-26 kg) traveling when it is at a temperature of 440 Kelvins?4.Suppose you wish to measure the mass of a planet. To do so, you place a test mass in orbit around the planet at a distance of 6.6e+8 meters from the center of the planet. You find that the orbital period is 2.1e+5 seconds. What is the mass of the planet?
Cody Roberts weighs 190lbs. He has joined a local running club and wants to start carbohydrate loading 1-3 days prior to his next race to increase his glycogen stores. How many grams of carbohydrate per day should he consume while he is carbohydrate loading?
the dehydration reaction of 2-methyl-2-butanol is favored when the reaction mixture is heated. however, the temperature of the reaction mixture should not exceed 90 degrees celsius in this case ,explain.
Use Boyle’s law to calculate the volume the gas will occupy if the pressure is increased to 1.89 atm while the temperature is held constant.A fixed quantity of gas at 22^circ C exhibits a pressure of 730 torr and occupies a volume of 4.42 L.
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