What is another simple way to describe the weight of an object?
a. The mass of that object.
b. The mass of that object at an acceleration of 1 m/s2.
c. The magnitude of the force attracting it toward Earth's surface.
d. The height of that object.
e. The acceleration of that object.
c
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A square loop (length along one side = 20 cm) rotates in a constant magnetic field which has a magnitude of 2.0 T. At an instant when the angle between the field and the normal to the plane of the loop is equal to 20° and increasing at the rate of 10°/s, what is the magnitude of the induced emf in the loop?
a. 13 mV b. 0.27 V c. 4.8 mV d. 14 mV e. 2.2 mV
What is the molarity of 0.5 liters of a solution with five moles of sucrose in it?
A) 10 molar B) 0.5 molar C) 5 molar D) 2.5 molar E) 1 molar
What forces are included in a free-body diagram for an object? a. The forces acting on the object and the forces the object exerts on any other objects it is in contact with. b. The forces acting on the object and the forces the object exerts on all other objects in the system
c. Only the forces acting on the object. d. Only forces internal to the object.
Resistance and Resistivity: Calculate the current through a 10.0-m long 22-gauge nichrome wire with a radius of 0.321 mm if it is connected across a 12.0-V battery. The resistivity of the nichrome is 1.00 × 10-6 ? ? m.
A. 30.9 A B. 61.8 A C. 0.388 A D. 0.776 A