A box of mass m = 19.5 kg m=19.5 kg is pulled up a ramp that is inclined at an angle θ = 23.0 ∘ θ=23.0∘ angle with respect to the horizontal. The coefficient of kinetic friction between the box and the ramp is μ k = 0.335 μk=0.335 , and the rope pulling the box is parallel to the ramp. If the box accelerates up the ramp at a rate of a = 2.69 m/s 2 a=2.69 m/s2 , calculate the tension F T FT in the rope. Use g = 9.81 m/s 2 g=9.81 m/s2 for the acceleration due to gravity.

An object thrown vertically upward from the surface of a celestial body at a velocity of 36 m/s reaches a height of sequalsminus0.9tsquaredplus36t meters in t seconds. a. determine the velocity v of the object after t seconds. b. when does the object reach its highest point? c. what is the height of the object at the highest point? d. when does the object strike the ground? e. with what velocity does the object strike the ground? f. on what intervals is the speed increasing?

What happens to light waves from a star as the star moves away from earth?

Argon is adiabatically compressed from an initial volume of 16 liters to a final volume of 2 liters. by what factor do the following quantities change? do they increase or decrease? (a) the rms speed (b) the thermal energy of the gas (c) the molar specific heat cv (d) the pressure