Smoke alarms only emit alpha radiation. Why is it important that it does not emit other radiation?

Sharpening a pencil leaves behind pencil shavings. is sharpening a pencil a physical change or a chemical change

What is the momentum of a volleyball with a velocity of 50 mph and a mass of. 5 kg?

Experimental tests have shown that hammerhead sharks can detect magnetic fields. In one such test, 100 turns of wire were wrapped around a 7.0-m-diameter cylindrical shark tank.

A 5.8 * 104-watt elevator motor can lift a total weight of 2.1 * 104 newtons with a maximum constant speed of (1) 0.28 m/s (2) 0.36 m/s (3) 2.8 m/s (4) 3.6 m/s

Which situation best describes the act of reducing? paying bills online instead of sending paper through the mail donating gently used clothes and household items using plastic bags a second time to avoid buying new ones buying products that can be

Why would a long series of gradual ramps be better than one short, steep ramp for moving heavy blocks of stone?

Why are some liquids more viscous than others?

If a person weighs 125 lbs, 8oz., how many mg does s/he weigh

An iron rod is: A:a good conductor of heat and electricity, but not magnetic B: magnetic and a good conductor of heat, but is an insulator of electricity C: magnetic and a good conductor of heat and electricity D: not magnetic and an insulator of

Which stage are there homologous chromosomes lines up down the middle of the cell