An artillery shell is fired with an initial velocity of 300…

An artillery shell is fired with an initial velocity of 300 m/s at 55◦ above the horizontal. To clear an avalanche, it explodes on a mountainside 42 s after firing. What are the x and y coordinates of the shell where it explodes? x = [BLANK-1] km y = [BLANK-2] km

A student examines two skin samples under a microscope. Samp…

A student examines two skin samples under a microscope. Sample A is obtained from the palm of the hand, while Sample B is obtained from the forearm. The student observes that Sample A has a much thicker epidermis and numerous sweat glands but lacks hair follicles and sebaceous glands. Sample B contains hair follicles and sebaceous glands and has a thinner epidermis. Which statement BEST explains the difference between the two samples?  

A car starts from rest and accelerates at 2.50 m/s22.50\,\ma…

A car starts from rest and accelerates at 2.50 m/s22.50\,\mathrm{m/s^2} for 8.00 s8.00\,\mathrm{s}, then travels at constant velocity for 12.0 s12.0\,\mathrm{s}, and finally decelerates at 3.00 m/s23.00\,\mathrm{m/s^2} until it stops. Find the total distance traveled.

What is the mass, in grams, of 4.0×1023 atoms of Kr?[respons…

What is the mass, in grams, of 4.0×1023 atoms of Kr?[response_blankA]   NOTE: If an answer needs to be written in scientific notation, use the following format: 1.2×103 should be written as 1.2e3 or 1.2×10^31.2×10-3 should be written as 1.2e-3 or 1.2×10^-3