Other Physics Answers

A 20.0-kg particle has a deBroglie wavelength of 10.0 cm. How fast is the particle moving?

A. 1.30 x 10^-34 m/s

B. 2.64 x 10^-34 m/s

C. 3.31 x 10^-34 m/s

D. 3.98 x 10^-34 m/s

E. 4.40 x 10^-34 m/s

The photoelectric minimum (threshold) frequency for a material is 3.3 x 10^-7 m. What is the work function for this material?

A. 9.2 eV

B. 5.6 eV

C. 3.8 eV

D. 6.1 eV

E. 4.9 eV

The photoelectric minimum (threshold) frequency for a material is 2.23 x 10¹⁵ Hz. What is the work function for this material?

A. 8.3 eV

B. 4.9 eV

C. 11 eV

D. 9.8 eV

E. 9.2 eV

The work function of a certain material is 4.9 eV. What is the photoelectric minimum (threshold) frequency for this material?

A. 1.18 x 10¹⁵ Hz

B. 2.23 x 10¹⁵ Hz

C. 9.01 x 10¹⁴ Hz

D. 3.48 x 10¹⁵ Hz

E. 2.56 x 10¹⁵ Hz

A.   Find the capacitance of a 4.0 cm diameter sensor immersed in oil if the plates are separated by 0.25 mm. (ε_r = 4.0 for Oil)

A 40g sample of chloroform is condensed from a vapor to a liquid at 61.6 degree Celsius. It releases 9870 J of thermal energy. What is the heat of vaporization of chloroform?

Single choice.

SCIENTIFIC NOTATION (1.23 x 10^n).

Three point charges are arranged on a line. Charge q3 = +5.00 nC and is at the origin. Charge q2 = -3.00 nC and is at x = +4.00 cm. Charge q1 is at x = +2.00 cm. What is q1 (magnitude and sign) if the net force on q3 is zero? 

A total charge of 4.80C is distributed on two metal spheres. When the spheres are 10.00 cm apart, they each feel a repulsive force of 4.2x10^11 N. How much charge is on the sphere which has the lower amount of charge?

A 50 N force causes a spring to compress 0.09 m.

a brick is thrown forward on the ground with a speed of 28 m/s. the coefficient of sliding friction between the brick and the ground is 0.25. compute the time and the distance the brick will travel before coming to rest