1,302 Answered Questions for the topic physical science
Physical Science Physics
07/24/16
The function of a lens is to change the
A. refraction of light rays or waves. B. absorption of light rays or waves. C. frequencies of light in various directions. D. direction of light rays or waves.
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Physical Science Physics
07/24/16
A diffraction grating commonly
A. produces multiple reflections. B. converges light of different colors. C. disperses light into its component colors. D. spreads light according to amplitude.
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Physical Science Physics
07/24/16
Polarization is a property that illustrates
A. the particle nature of light.
B. the wave nature of light.
C. both the particle and wave nature of light.
D. none of the above
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Physical Science Physics
07/13/16
A charge of 38 C passes at a steady rate through a resistor in a time of 6 s.
A charge of 38 C passes at a steady rate through a resistor in a time of 6 s. What is the current through the resistor?
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Physical Science Physics
07/13/16
A 24 O resistor has a voltage difference of 5 V across its leads.
What is the current through the resistor?
What is the power being dissipated in this resistor?
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Physical Science Physics
07/13/16
A 18 V battery in a simple circuit produces a current of 3.5 A through the circuit.
A 18 V battery in a simple circuit produces a current of 3.5 A through the circuit. How much power is being delivered by the battery?
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Physical Science Physics
07/13/16
Two resistors, each having a resistance of 17 O, are connected in parallel.
Two resistors, each having a resistance of 17 Ω, are connected in parallel. What is the equivalent resistance of this combination?
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Physical Science Physics
07/13/16
A 17 O resistor in a circuit has a voltage difference of 4 V across its leads.
A 17 Ω resistor in a circuit has a voltage difference of 4 V across its leads. What is the current through this resistor?
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Physical Science
06/30/16
Soundproof panels which are used in ceilings to help deaden sound between floors are made of soft material and have holes or a rough surface. Why?
Light and Color
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Physical Science
06/16/16
is a device that converts electrical energy into mechanical energy is a motor
Electrical energy
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Physical Science
06/03/16
What is necessary to fully describe a scalar measurement? What is necessary to fully describe a vector measurement?
I need these two answered
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05/23/16
What is the % Sn and % Cu in the sample?
You are given a piece of metal alloy that is made of tin and copper. If the density of the sample is found to be 8.59 g/mL what is the % Sn and % Cu in the sample?
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Physical Science
05/18/16
what is the speed of a crow if it flies 100m in 6 seconds
what is the speed of a crow if it flies 100m in 6 seconds
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Physical Science
04/24/16
a 7.5kg block is placed on a table.if its bottom surface area is 0.6m2 how much pressure does the block exert on the tabletop?
if you can please show me how you got your answer . Thanks!
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04/21/16
how to answer using snell's law
Need to know how to solve and how you got an answer. A beam of light moves from an optical fiber (n=1.44) to air. If the beam of light entered at an angle of 12 degrees, what is the angle of...
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04/21/16
How to find using snell's law
Need to know how to solve and how you got an answer. A beam of light moves from air to an optical fiber (n=1.44). If the beam of light entered at a 23 degree angle, what is the angle of refraction...
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Physical Science
04/19/16
when you run around a track at 5km/h your velocity is constant
i need to make a game for my class in 8th grade i need to know if this is a true or false
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Physical Science
04/13/16
Exoplanets are planets that orbit stars other than our sun
is it true of false
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Physical Science
03/30/16
how can Ethan BEST describe his conclusion
Ethan is observing chemical and physical properties of a substance he heats a substance and observes that the substance turn from a brown solid to a black powder he refers to several chemistry...
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Physical Science
03/27/16
Which compound is composed of oppositely charged ions? Please help me!
\l "\l " A. SCl2 \l "\l " B. NH3 \l "\l " C. OCl2 \l "\l " D. Na2O
Physical Science
03/10/16
objects fall toward earth at the rate of 9.8 m/s2 because of centripetal force
this is about forces and newtons laws
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Physical Science
03/07/16
LeBron can run down the court 9 m/s. How Long does it take him to run the full length of the 27m court
I need help
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Physical Science
03/02/16
IF A CAR TRAVELS 300. METERS WEST IN 12.0 SECONDS WHAT IS THE AVERAGE SPEED OF THE CAR?
IF A CAR TRAVELS 300. METERS WEST IN 12.0 SECONDS WHAT IS THE AVERAGE SPEED OF THE CAR?
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Physical Science Physics
02/26/16
Physics Question
How many moles of caffeine are there in 312.0g of caffeine?
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Physical Science Physics
02/21/16
physical science
Isotoes of an element have the same number of___.
a. neutrons but different numbers of protons
b. protons but different numbers of neutrons
c. neutrons and electrons
d. protons and...
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