Chemistry Physical Chemistry Level: Misc Level
What mass of glucose should you use to prepare 0.112 molal C 6 H 12 O 6 (aq )?
Chemistry Physical Chemistry Level: Misc Level
The partial molar volumes of propanone and trichloromethane in a mixture in which the mole fraction of C H C I 3 is 0.4693 are 74.166 cc /mol and 80.235 cc /mol respectively. What is the volume of a solution of total mass 1.000 kg?
Chemistry Physical Chemistry Level: Misc Level
A mixture was prepared consisting of 50.0 g of 1 -propanol and 50.o g of 2 - propanol What are the mole fractions of the two alcohols ?
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
A metal bar of length L= 0.5 meters moves to the left at 2 m/s in a constant magnetic field of 250 mT (pointing into the page). The bar moves on some conducting rails, connected by a resistor of 10 ohm. What is the size and direction of the induced current?
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
A mass spectrometer is used to separate aluminum isotopes. The lightest aluminum isotope ( 13 protons and 10 neutrons )and the heaviest aluminum isotope ( 13 protons and 18 neutrons ) need to be separated by 15 centimeter on the detector of the mass spectrometer. The aluminum is ionized once ( 1 electron is missing ). Assume the mass of a neutron is the same as the mass of a proton. Pick the velocity and the magnetic field.
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
A velocity selector is supposed to select things traveling at 100 m/s. The separation between the plates that produce the electric field is 0.25 m. The magnetic field is 0.02 T.
a) What voltage is required across the plates to make the velocity selector work as desired?
b) What happens to things traveling slower?
Physics Electrostatics Level: Misc Level
A pair of charged plates is used to accelerate singly ionized aluminum to 1250 m/s. The plates are 0.10 m apart. What is the voltage across the plates?
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
The solenoid has 1250 turns of wire carrying a current of 12 A. It is a wound as shown in the diagram.
a) What is the magnetic field at the center of the solenoid?
b) Which end of the solenoid is the south end? Why?
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
A pair of long parallel wires carry current in opposite directions. Wire 1 carries 4 A as shown. Calculate the size and direction of the force on wire 2 due to wire 1. Assume a side by side length of 3 m, and a separation of 0.1 m.Start from the two current carrying wires and show all steps.
Physics Kinematics Level: Misc Level
What is the initial speed of a toy rocket launched from the surface of the Earth and reaching a height of 20.2 km?
Physics Circular Motion Level: Misc Level
A torque of 12 N m is applied to a solid, uniform disk of radius 0.50 m. If the disk accelerates at 5.0 rad / s ^2, what is the mass of the disk ?
Physics Circular Motion Level: Misc Level
The crankshaft of an engine is accelerated from rest at the uniform rate of 4.0 rad /s 2 for 30 s. Find the rotational speed of the crankshaft at the end of 30 in rev /min.
Physics Force & Laws Of Motion Level: Misc Level
The magnitude of the momentum of a particle is 32 kg m /s at a certain. If the velocity has a magnitude of 20 m/s at that instant, the mass of the particle is:
Physics Circular Motion Level: Misc Level
A solid cylinder of mass 8 kg and diameter 20 cm is rotated about an axis parallel to its central axis at a distance of 10 cm from the cylinder. The rotational inertia of the cylinder about the parallel axis is:
Physics Force & Laws Of Motion Level: Misc Level
The center of mass of three objects is located at ( 1,0 ).One object with a mass of 5.0 kg is at ( -2, -1 ) and a second object with a mass of 2.0 kg is at ( 0,0 ).Find the coordinates of the third mass of 3.0 kg.
