What process do scientists use to determine how nature works?
a. The observational method
b. The scientific method
c. The brainstorming method
d. The laboratory method
e. The naturalistic method
b
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Consider the following statement, and explain whether or not it is sensible: Someday we may build spaceships capable of traveling at a speed of 1 light-second per hour
What will be an ideal response?
The heavy boy and light girl are balanced on the seesaw. If they both move inward so that each is exactly half the original distance from the pivot, then the
1) boy's end will move downward. 2) girl's end will move downward. 3) seesaw will remain in balance. If the fulcrum of the seesaw is repositioned so each can sit at an END of the board and be in balance, then if each moves inward half way the 4) boy's end will move downward. 5) girl's end will move downward. 6) seesaw will remain balanced.
The right-hand rule allows one to find a property of the interaction of a magnetic field with a charged particle. The right-hand rule applied to moving charges:
a. results in positive charges moving clockwise. b. results in negative charges moving clockwise. c. can be used for positive charges only. d. gives the direction of the force on a charge moving in a magnetic field.
The walls of an ice chest are made of 2.00-mm-thick insulation having a thermal conductivity 0.00300 W/m ? K
The total surface area of the ice chest is 1.20 m2. If 4.00 kg of ice at 0.00°C are placed in the chest and the temperature of the outside surface of the chest is 20.0°C, how long does it take the ice to melt under steady state conditions? The latent heat of fusion of water is 79.6 cal/g = 334 kJ/kg. A) 4.22 h B) 22.1 h C) 17.6 h D) 1.33 d E) 10.3 h