A rock falls off a cliff and hits the ground after three seconds. What is its velocity right before it hits the ground?

9.8 m/s

0.31 m/s

29.4 m/s

3.3 m/s

What are properties of valence?

To determine the pH of a solution using a pH indicator paper, you need a.

During radiation treatments for cancer, high energy rays are used to destroy or damage the cells which are multiplying rapidly and causing illness. What would the most serious risk of this treatment be?

Calculate the standard cell potential given the following standard reduction potentials: Al3++3e-→Al; E∘=-1.66 V Cu2++2e-→Cu; E∘=0.340 V

Which of the following is a heterogeneous mixture? Air. Salt water. Steel. Soil.

A chemist is working on a reaction represented by this chemical equation: FeCl2 + 2KOH → Fe (OH) 2 + 2KCl. If the chemist uses 4.15 moles of iron (II) chloride and 3.

vWould radiation with a wavelength 0.91 nm or a frequency of 5.9*1011 s-1 be detected by an X-ray detector? Would radiation with a wavelength 0.91 or a frequency of 5.9*1011 be detected by an X-ray detector? Only the radiation with a wavelength 0.

Why Thioacetamide is heated?

Which compound decreases in solubility as the temperature of the solution is increased from 10c to 50c

What variable is plotted on the x-axis