How do you convert 3 meters to centimeters? | Socratic
2016年10月27日 · 300 cm 1 m = 100 cm So, 3m = 100*3 = 300 cm. Every morning for breakfast, Mika drinks 20 cL of orange juice. How many milliliters of orange...
A net force on a 2-kg accelerates the cart at 3 m/s^2. How much ...
2016年6月4日 · Pretty simple. It only involves the Newton's second law. I've done it below. Let the force be F newtons. For the first cart, m_1 = 2 kg and a_1 = 3 ms^(-2). Thus from the Newton's second law, F = m_1*a_1 = 6 N Now, let the mass of the second body be m_2 Thus, m_2 = 4kg Applying Newton's second law to this case, F = m_2*a_2, where a_2 is the acceleration on the second cart. implies a_2 = F/m_2 ...
If a cylindrical tank with radius 5 meters is being filled with water ...
2014年8月15日 · The answer is (dh)/(dt)=3/(25 pi)m/(min). With related rates, we need a function to relate the 2 variables, in this case it is clearly volume and height. The formula is: V=pi r^2 h There is radius in the formula, but in this problem, radius is constant so it is not a variable. We can substitute the value in: V=pi (5m)^2 h Since the rate in this problem is …
What mass of potassium hydroxide, KOH, is required to make 250 …
2016年5月22日 · 250 cm^3 = 0.25 dm^3 (= 0.25 L) For a solution, C=n/V (concentration = number of moles/volume). Rearranging, n=CV=0.50xx0.25=0.125 mol We need 0.125 mol of KOH and the molar mass of KOH is 56.1 g mol^-1, so 56.1xx0.125=7.0 g.
What is the surface area-to-volume ratio of a cube whose sides …
2017年2月22日 · Surface area is 54 cm^2, volume is 27 cm^3 and surface area-to-volume ratio is 2 If s is the side of a cube, then its surface area is 6s^2 and its volume is s^3 Hence, if the sides of a cube are 3 inches long its surface area is 6xx3^2=6xx9=54 cm^2, its volume is 3^3=27 cm^3 and surface area-to-volume ratio is 54/27=2
How do you calculate the number of moles from volume?
2014年1月8日 · It depends on the substance whose volume you know. > If you have a pure liquid or a solid, you use its density to calculate its mass and then divide the mass by the molar mass. If you have a solution, you multiply the molarity by the volume in litres. MOLES FROM VOLUME OF PURE LIQUID OR SOLID There are two steps: Multiply the volume by the density to get the mass. Divide the mass by the molar ...
What is the frequency of a radio wave with a wavelength of 3 m?
2016年6月14日 · The frequency of the radio wave is 1xx10^(8) Hz Let's use the this formula: C = lambda xx v C represents the speed of light, which has a value of approximately 3.00xx10^(8) m/s lambda represents the wavelength and the units should be in meters. v represents the frequency, which should have units of Hz or s^(-1). Hz is hertz or reciprocal seconds. Now let's rearrange the equation to solve for v ...
How do you calculate molality from molarity? + Example - Socratic
2014年1月27日 · See explanation. If all you are given is Molarity, then you also need to know the density of the solution to calculate molality, m (mol/kg solvent). The easiest way to understand the process is to assume you have 1L of solution which is 1000 mL. Think of the units of molarity and molality. So here is an example: What is the molality of a "3.00 M" solution of "NaCl"? The density of the solution ...
A hypothetical cube grows so that the length of its sides are ...
2016年8月16日 · A hypothetical cube grows so that the length of its sides are increasing at a rate of 4 m/min. How fast is the volume of the cube increasing when the sides are 7 m each?
If a force of 50 N stretches a spring 0.10 m, what is the ... - Socratic
2018年3月26日 · The spring constant is 500 \ "N/m". We use Hooke's Law, which states that, F=kx F is the force in newtons k is the spring constant x is the extension of the spring in meters Solving for k, we get, k=F/x Now, we plug in the values, and we get, k=(50 \ …