What power should a motor have to perform
A skier of mass 70 kg is pulled up a slope by a motor driven cable. (a) How much work is required to pull him 60 m up a 30 degree slope (assumed frictionless) at a constant speed of 2.0 m/s? (b) What power must a motor have to perform this task?
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A monatomic ideal gas is compressed adiabatically from a pressure of 1.16 x 105 Pa and volume of 260 L to a volume of 32.0 L. (a) What is the new pressure of the gas? Answer in Pa
In the US, it is reported that 72% of woman have some type of piercing. The most popular piercing location is the ear. A recent study reported the following statistics on the popularity of alternative piercings (percent of the total non-ear pierci
A 2.1 x 10^3 kg car starts from rest at the top of a 5.0 m long driveway that is inclined at 20 degrees with the horizontal. If an average friction force of 4.0 x 10^3 N impedes the motion, find the speed of the car at the bottom of the driveway.
How many of those donors should the Red Cross have expected to have type O-negative blood? A typical donation is one pint, so assuming the typical donation and that each person only donates once, what amount of O-negative blood could the Red Cross
In testing a hypothesis using the chi-squared test, the expected frequencies are based on the
The energy of an RLC circuit decreases by 1.00% during each oscillation when R=2.00 ohms. If this resistance is removed, the resulting LC circuit oscillates at a frequency of 1.00 kHz. Find the values of inductance and capacitance.
It is compressed slowly to 10 litres in a polytropic process with n=2 then compressed further to 5 litres in a second polytropic process in which n=1.5. Find the total work done on the carbon dioxide.
One criterion used to evaluate employees in the assembly section of a large factory is the number of defective pieces per 1,000 parts produced. The quality control department wants to find out whether there is a relationship between years of exper
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In the TED Talk "The Urgency of Intersectionality," Kimberle Crenshaw explains how people experience overlapping forms of discrimination based on race
How has race been a form of caste in South Africa? Although apartheid is no longer law, why does racial inequality continue to shape South African society?
Question: The concept of "less eligibility" was introduced in 1834 to Option A limit assistance.
Using two examples for each level (micro, mezzo, and macro), describe how a policy practitioner brings about policy change.
Question: Which of the following people is likely to be the MOST individualistic?
We have discussed the importance of archaeology to the study of gender. What can information about past societies tell us about gender?