Saturday
August 2, 2014

Homework Help: Physical Science

Posted by mysterychicken on Friday, May 22, 2009 at 4:57pm.

Need help-
1.Eva is in a closed dark room. She uses her arm muscles to turn on a lamp. When she moves her hand closer to the lamp, the light heats her hand. The light bounces off the pages of a book and into her eyes. If this room is a closed system, what happens to the total amount of energy in the room?
A.It remains constant.
B.it increases
C.it decreases
D.it increases, then decreases

2.Chen connects several light bulbs in a series circuit. Electricity flows through the circuit, and all the light bulbs light up. What will happen if Chen removes one ligh bulb?
A.The circuit will be closed
B.the other bulbs will stay lit
C.the circuit will become a parallell circuit.
D.the other bulbs will turn off
D?

10.Carrie observes a blue object. Which color(s) of light does this object absorb?
A.blue
B.white
C.all colors except blue
D.all colors
C?

Thanks
-MC

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

physics - Eva is in a closed, dark room. She uses her arm muscles to turn on a ...
Physical Science - Turn an incandescent lamp on and off quickly while you are ...
physics - There are electrons in the filament of the ac lamp in your bedroom. ...
physics - There are electrons in the filament of the ac lamp in your bedroom. ...
Physics - A 100 W lamp is connected to 120 V, and its current is measured. A ...
physical science - the headlamp and 2 identical tail lamp are conected in ...
Math 8R - HELP!!!!! - Mr. Martanarie bought a new lamp and lamppost for his home...
Physical Science: Series Circuit - There is a circuit of 2 lamps in a series. If...
physics - The lowest resistance in a common electric circuit containing a common...
science - Minska has a problem. When she turns on a lamp, the lamp doesn't light...

Search
Members