If the coefficient of kinetic friction between a 35-kg crate and the ...
2018年8月14日 · The crate will move with constant speed when applied force is equals to Kinetic frictional force. And here it is mu_k ×N=mu_k ×mg=0.3×35×9.8=102.9N In abscence of frictional force any force will cause its motion but in that case it will be moving with constant acceleration!
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
How many grams of NaCl are needed to prepare 35 kg of a 5
2018年6月26日 · 1.75 kg To find the mass of NaCl, we'll use the formula: "%(m/m)" = "mass of solute"/"mass of solution"*100% NaCl in this case is the solute Given from the question: mass of solution = 35 kg %(m/m) = 5% Plug in the values: "%(m/m)" = "mass of solute"/"mass of solution"*100%="mass of NaCl"/"35 kg"*100%=5% "mass NaCl"=5/100*35=1.75 kg
How much work does it take to lift a #35 kg # weight #1/2 m
2018年3月17日 · 171.5 J The amount of work required to complete an action can be represented by the expression F*d, where F represents the force used and d represents the distance over which that force is exerted. The amount of force required to lift an object is equal to the amount of force required to counteract gravity. Assuming the acceleration due to gravity is -9.8m/s^2, we …
The Moon's mass is 7.34 10^22 kg, and it is 3.8 10^8 m away
2015年10月28日 · The Moon's mass is #7.34 10^22# #kg#, and it is #3.8 10^8# #m# away from Earth. Earth's mass is #5.97 10^24# #kg#. How would you calculate the gravitational force of attraction between Earth and the Moon? What is Earth's gravitational field at the Moon?
How do you calculate the density in g/mL of 2.0 L of ... - Socratic
2016年9月2日 · 9212 views around the world You can reuse this answer ...
Calculate the heat required to raise the temperature of 0.75 kg of ...
2017年1月28日 · This will require 266.9 kJ of heat energy. To calculate the energy required to raise the temperature of any given substance, here's what you require: The mass of the material, m The temperature change that occurs, DeltaT The specific heat capacity of the material, c (which you can look up). This is the amount of heat required to raise 1 gram of that substance by 1°C. …
How to Calculate the de Broglie wavelength for each of the
2015年4月11日 · To calculate the de Broglie wavelength for a particle, or for a tennis ball for that matter, just use the equation p = h/(lamda), where p - the momentum of the atom; h - Planck's constant - 6.626 * 10^(-34)"m"^(2)"kg s"^(-1) lamda - wavelength; Momentum can be expressed as p = m* v, where m - the mass of the particle; v - the speed of the particle. So, starting with …
A 35 kg child moves with uniform circular motion while ... - Socratic
2017年11月29日 · The child's centripetal acceleration is 2.1125m \\/s^2. Newton's second law relates force F, mass m and acceleration a. F=ma The centripetal force required to keep an object of mass m with tangential velocity v at a radius r is: F=(mv^2)/r Combining these two equations gives: ma=(mv^2)/r Mass m is a factor of both sides and cancels out. a=v^2/r In the case of …
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