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Questions in physics

[Free] Violet light has a wavelength of [tex]4.10 \times 10^{-12} \text{ m}[/tex]. What is the frequency?

[Free] Gravitational force decreases with distance. What does this mean for a space traveler who leaves Earth in a spaceship?

[Free] What symbols are used when drawing circuit diagrams?

[Free] You use a 1200-watt hair dryer for 10 minutes each day. a. How many minutes do you use the hair dryer in a month? (Assume there are 30 days in the month.) b. How many hours do you use the hair dryer in a month? c. What is the power of the hair dryer in kilowatts? d. How many kilowatt-hours of electricity does the hair dryer use in a month? e. If your town charges $0.15/kWh, what is the cost to use the hair dryer for a month?

[Free] A cubic piece of metal measures 7.50 cm on each edge. If the metal is nickel, whose density is [tex]8.90 \, \text{g/cm}^3[/tex], what is the mass of the cube?

[Free] A solid rubber stopper has a mass of 33.0 grams and a volume of 30.0 cm³. What is the density of rubber?

[Free] A gas occupies a volume of 20 cubic meters at 9,000 pascals. If the pressure is lowered to 5,000 pascals, what volume will the gas occupy?

[Free] Calculate the average speed (in km/h) of a car stuck in traffic that drives 12 kilometers in 2 hours.

[Free] An alarm clock draws 0.5 A of current when connected to a 120-volt circuit. Calculate its resistance.

[Free] A ball is kicked 10 meters north, 5 meters west, 15 meters south, 5 meters east, and 5 meters north. Find the total displacement and the total distance it traveled.