A tungsten light bulb is glowing with blackbody radiation whose maximum occurs at a wavelength of 700.0 nm. What is the temperature of the tungsten element?
A. 3750 K
B. 4140 K
C. 4250 K
D. 4790 K
E. 5030 K
B. 4140 K
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An object is thrown upwards with a speed of 14 .0 m/s. How long does it take it to reach its maximum height?
A) 1.22 s B) 1.43 s C) 3.14 s D) 4.15 s E) 5.31 s
If a car accelerates at 4.0 m/s2, how long will it take to reach a speed of 80 km/hr, starting from rest?
What will be an ideal response?
A magnet on a frictionless mount would have its magnetic north pole point toward the Earth’s geographic
A. south pole B. north pole
A circular coil (radius = 0.40 m) has 160 turns and is in a uniform magnetic field. When the orientation of the coil is varied through all possible positions, the maximum torque on the coil by magnetic forces is 0.16 N × m when the current in the coil is 4.0 mA. What is the magnitude of the magnetic field?
a. 0.37 T b. 1.6 T c. 0.50 T d. 1.2 T e. 2.5 T