Steven Weinberg, Abdus Salam, and Sheldon Glashow shared the 1979 Nobel prize in physics for their development of __________

Fill in the blank(s) with correct word


electroweak theory

Physics & Space Science

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A solid nonconducting sphere (radius = 12 cm) has a charge of uniform density (30 nC/m3) distributed throughout its volume. Determine the magnitude of the electric field 15 cm from the center of the sphere

a. 22 N/C b. 49 N/C c. 31 N/C d. 87 N/C e. 26 N/C

Physics & Space Science

An 0.80-kg block is held in place against the spring by a 67-N horizontal external force (see the figure). The external force is removed, and the block is projected with a velocity v1 = 1.2 m/s upon separation from the spring

The block descends a ramp and has a velocity v2 = 1.9 m/s at the bottom. The track is frictionless between points A and B. The block enters a rough section at B, extending to E. The coefficient of kinetic friction over this section is 0.39. The velocity of the block is v3 = 1.4 m/s at C. The block moves on to D, where it stops. The spring constant of the spring is closest to A) 3900 N/m. B) 2600 N/m. C) 2000 N/m. D) 1600 N/m. E) 1100 N/m.

Physics & Space Science

Brown dwarfs have high luminosities

Indicate whether the statement is true or false

Physics & Space Science

Why do scientists think that our solar system must have formed sometime after nearby supernovae explosions?

A) existence of heavy elements B) solar temperature too low C) our Sun is a G-type star D) They don't—scientists believe our Sun is among the first generation of stars.

Physics & Space Science