Which of the following would decrease the mechanical advantage

A) a fulcrum

B) a fixed pulley

C) friction

D) heat

What do we now understand to be the primary difference between normal galaxies and active galaxies?

Initially sliding with a speed of 2.2m/s, a 1.8kg block collides with a spring and compresses it 0.31m before coming to rest. What is the force constant of the spring?

What does erosion do to landforms and to sediment

Determination of Thermal Conductivity. In determining the thermal conductivity of an insulating material, the temperatures were measured on both sides of a flat slab of 25 mm of the material and were 318.4 and 303.2 K.

36 kilo-joules to joules?

Paragraph for health triangle

The index of refraction of silicate flint glass for red light is 1.620 and for violet light is 1.660. A beam of white light in this glass strikes the glass-air interface at a 25.50∘ angle of incidence and refracts out into the air.

13. A car accelerates from 6.0 m/s to 18 m/s at a rate of 3.0 m/s^2 How far does it travel while accelerating?

Which of the following is not a prediction of General Relativity? (A) gravitational waves (B) spacetime is distorted by mass and energy (C) light can be bent and shifted in frequency by gravity (D) planetary orbits are elliptical

A thin film of MgF₂ (n = 1.38) coats a piece of glass. Constructive interference is observed for the reflection of light with wavelengths of 500 nm and 625 nm. What is the thinnest film for which this can occur?