Recent content by Aggie

xcomp of 3 lb a = 0 v= Vo s=Vot + So = 0 Y comp of 3 lb a= g v= gt + Vo s= gt^2/2 + Vot + So xcomp of 5 lb a = 0 v= Vo s=Vot + So = 0= Vot + 1659 Y comp of 5 lb a= g v= gt + Vo s= gt^2/2 + Vot + So = 0 =gt^2/2 + Vot + 875

yes i have

A cannon shoots a shell straight up. It reaches its maximum height, 875 feet, and splits into two pieces, one weighing 3 lb and the other 5 lb. The two pieces are observed to strike the ground simultaneously. The 5 lb piece hits the ground 1,659 feet away from the explosion (measured along the x...

is my equation right or wrong

(23*0.23^2)/2= (0.75*9.8*1.04)+(0.7*v^2)/2

A block of mass 0.08 kg is pushed against a spring with spring constant k=31 N/m. The srping is compressed 0.15 meters from its natural length. The block is released and it slides along a surface with coefficient of frition 0.45. How far does the block travel from the point at which is is...

A block, mass 0.75 kg, is "shot" from a spring gun from a table. The table has a height 1.04 m and is frictionless. If the spring has k=28 N/m and is originally compressed 0.23 m, how fast will the block be goign when it hits the ground? (1/2)*kx^2 = (1/2)mv^2 ? I got 4.3 m/s but the...

Liquid helium at 4.2 K has a density of 0.147 g/mL. Suppose that a 1.00-L metal bottle that contains air at 118K and 1.0 atm pressure is sealed off. If we inject 120.0 mL of liquid helium and allow the entire system to warm to room temperature (25 °C), what is the pressure inside the bottle?

An engine is used to pull a train of 2 cars out of a mine. The floor of themine slopes upward at an angle of 30 degrees. Each car has a mass of 10^4 kg and travels without friction. The engine can exert a max force of 1.5 * 10^5 N if the engineer trttles back so that the force exerted by the...

I came up withthe equation mg+ Fr = mg cos theta

A block of mass 20kg is pushed against a vertical surface at an angle of 30 degrees as shown. The coefficient of friction between the surface and the block is 0.2. What is the minimum magitude of P to hold the block still? I got 271.5 when I tried but the answer is 202.2

Please can you explain this because it makes no sense. We don't know the vertical distance

the vertical height is not given. unless we use zero then we get 24.5

how do you get the vertical component of velcocity. you get the horizontal component of velocity with what you have - 93/5 = 18.6 yrds/sec

i found the answer. I used Sin A = gD/Vo^2 Had a little help