Questions in Grade High-school

Questions in Grade High-school

[Free] Which expression is equivalent to cos 150°? A. cos 30° B. cos 330° C. cos (-30°) D. cos (-210°)

[Free] What is the correct word form of 3.051?

[Free] A bowling ball travels at 2.0 m/s and has 16 J of kinetic energy. What is the mass of the bowling ball in kilograms?

[Free] What is the potential energy of a 35 kg child sitting at the top of a slide that is 3.5 m above the ground? What is her kinetic energy if she moves down the slide at a speed of 5.0 m/s?

[Free] Why are water storage tanks usually built on towers or hilltops?

[Free] If you are making $7.25 per hour and work 40 hours a week for 5 days, how much would you get paid every two weeks?

[Free] Which is a proper description of chemical equilibrium? A. The frequencies of reactant and product collisions are identical. B. The concentrations of products and reactants are identical. C. The velocities of product and reactant molecules are identical. D. Reactant molecules are forming products as fast as product molecules are reacting to form reactants. E. The numbers of moles of reactants and products are equal.

[Free] Solid sulfur dioxide, SO₂(s) Choose from the following: A. an ionic solid B. a metallic solid C. a molecular solid containing nonpolar molecules D. a covalent network solid E. a molecular solid containing polar molecules

[Free] At a certain construction site, there is a pile containing 55 tons of sand. Four trucks, each of which holds 11.4 tons of sand, are filled from this pile. How many tons of sand remain in the pile? Please explain the work behind the solution.

[Free] Convert \(\frac{1 \frac{3}{20}}\) to a decimal number.