How moles of iron are contained in the vitamins in bottle
There are 18mg of iron in a vitamin tablet. If there are 100 tablets in a bottle, how moles of iron are contained in the vitamins in the bottle?
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The lowest A on a piano has a frequency of 27.5 Hz. If the tension in the 2.0 meter string is 308 N, and one-half wavelength occupies the wire, what is the mass of the wire in kg?
After reading Martin's ( 2002) article on the potential benefits of laughter, a group of student researchers decided to test the hypothesis that laughter increases pain tolerance.
A uniform rod (length L = 1 0 . m, mass = 2 0 . kg ) is suspended from a pivot a distance d = 0.25 m above its center of mass. The angular frequency in rad/s for small oscillations is approximately
If an actual heat pump requires 10 kW of power input for the same temperatures and same heat supplied from -7 , determine the actual COP and the actual heat rejected to the 29 reservoir, in kJ/s.
A tuning fork of frequency 1000 Hz is mounted 25 cm from the axis of a rotating horizontal table turning at a rate of 4 revolutions per second. What are the highest and lowest frequencies heard by auditor whose ear is at the same height as the tun
What was the change in kinetic energy? How much work did friction do? What happened to the temperature of the surface of the box? Are you conserving energy? Explain.
The string will break if its tension exceeds 50.0 . The stone is whirled in a horizontal circle on a frictionless tabletop; the other end of the string remains fixed. Find the maximum speed the stone can attain without breaking the string.
Linda commutes 36 minutes to her work each day. The average male commuter in the United States spends 42 minutes commuting each day.
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