What is the gravitational potential energy of a # 35 kg ... - Socratic
2016年1月4日 · I found 571.7J With respect to the ground it will be equal to: U=mgh Where: m=35kg is the mass; g=9.8m/s^2 is the acceleration of gravity; h=5/3m is the height with respect to ground (considered at zero potential energy). So: U=35*9.8*5/3=571.7J
Which requires more work: lifting a 70-kg sack vertically 2
2017年3月12日 · We can use the general expression for the work done against gravity: W=mgh In both cases: 1) W_1=70*2*9.8=1,372J 2) W_2=35*4*9.8=1,372J Physics Science
What is the change in momentum that occurs when a 1.0 kg
2018年2月20日 · 2"kg m"/"s" of momentum is lost. We have to find Deltap, where p is the linear momentum. The formula for momentum is p=mv, where m is the mass of the body and v its velocity. We have p_1 and p_2. Deltap=p_2-p_1. The …
A 0.115-kg hockey puck, moving at 35.0 m/s, strikes a 0.265-kg …
2017年1月29日 · A 0.115-kg hockey puck, moving at 35.0 m/s, strikes a 0.265-kg octopus thrown onto the ice by a hockey fan. The puck and octopus slide off toget
1 pts Anna Litical and Noah Formula are doing The Cart and
2018年2月9日 · They drop a brick on a 17.9 kg cart moving at 12.19 m/s. After the collision, the dropped brick and cart are moving together with a velocity of 5.71 m/s? Physics
Can gravity do work on an object? + Example - Socratic
2017年7月21日 · Yes To do work on an object, gravity must have two properties: It exerts a force on an object. It is possible for that object to move in the direction of the force of gravity (or any direction non-perpendicular to the force) To show that both of these statements are true, let's find an example where they are both true. Let's say I have a basketball and I'm holding it 2 meters above the ground ...
What is the molality of a solution prepared by dissolving 19
2016年12月7日 · 49.8 grams of KI is dissolved in 1.00 kg of solvent. What is the molality? 58.44 grams of NaCl and you dissolved it in exactly 2.00 kg of pure water (the solvent).
A weather rocket is launched straight up. Seconds into the
2015年9月18日 · A weather rocket is launched straight up. Seconds into the flight, its velocity is 130m/s and it is accelerating at 19 m/s^2. At this instant, the rocket's mass is 59 kg and it is losing mass at the rate of 0.55 kg/s. What is the net force on the rocket?
An electron has a speed of 8.4 * 10^5 m s^-1. What is the de
2016年5月26日 · The de Broglie wavelength (#λ#) is given by#color(blue)(|bar(ul(color(white)(a/a) λ = h/(mv)color(white)(a/a)|)))" "#
What is the molar mass of a gas that has a density of 1.02 g
2016年5月30日 · What is the molar mass of a gas that has a density of 1.02 g/L at 0.990 atm pressure and 37°C?