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Physics
Physics
High School
a galaxy has an h-alpha emission line observed at a wavelength 10 percent larger than the rest wavelength of h-alpha. what is the redshift of the galaxy?
Physics
College
you hold a spherical salad bowl 50 cm in front of your face with the bottom of the bowl facing you. the salad bowl is made of polished metal with a 36 cm radius of curvature.(a) Where is the image of your 5.0-cm-tall nose located?(b) What are the images size, orientation, and nature (real or virtual)?
Physics
College
Find the depth in a lake at which the pressure is 173.693 lb/in2.
Physics
High School
the frequency of the fundamental of the guitar string is 320 hzhz . at what speed vvv do waves move along that string? express your answer in meters per second.
Physics
High School
Astronomers will never directly observe the first few minutes of the universe because?
Physics
High School
calculate the rotational inertial of a wheel that has a kinetic energy of 35.3 kj when rotating at 714 rev/min.
Physics
College
about the atmospheric winds at different heights on the giant planets, which one of the following statements is not correct?
Physics
High School
What is the frequency of a sound wave that has a wavelength of 2.0 m speed of sound 340 m s?
Physics
High School
What is the wavelength of an electron moving with a velocity of 2.0 into 10 to the power 7 m per second?
Physics
High School
How do you calculate frequency and relative frequency?
Physics
High School
what vertical acceleration should his rocket have so that his apparent weight is equal to his true weight on earth?
Physics
High School
A ball on a string travels once around a circle with a circumference of 2. 0 m. The tension in the string is 5. 0 n.
Physics
High School
the circuit is protected by a ground fault interrupter in the plug. the water in the tank is grounded. the two bare wires correspond to the two pins on the ground fault interrupter plug. if the __________ wire is touched to the water, the ground fault interrupter will disconnect the circuit.
Physics
High School
cepheid variables are located in two different galaxies, a and b. both stars have the same average apparent magnitude. the star in galaxy a has a bright-dim-bright period of 10 days. the star in galaxy b has a bright-dim-bright period of 30 days. which of the two galaxies is at a greater distance?
Physics
High School
how long (in ns) does it take light incident perpendicular to the glass to pass through this 6.4 cm -thick sandwich?
Physics
High School
a group collected data on velocity and time for an object that's constantly accelerating. how could a value of the constant acceleration be estimated?
Physics
High School
What natural disaster presents the greatest threat to Western Central Europe?volcanoesfloodingTsunamisearthquakes
Physics
High School
A sports car has a mass of 1500 kg and accelerates at 5. 0 m/s2. What is the force acting on the sports car? (show your work!).
Physics
High School
ball a is thrown upward at the same time as ball b and with half the speed of ball b. how much higher does b go than a?
Physics
High School
A 110-pound person pulls herself up 4. 0 feet. This took her 2. 5 seconds. How much power was developed?.
Physics
High School
elements and their properties section 2 chart
Physics
High School
explain this to a five year old : how is phase shift related to an rlc circuit. how does the math work behind it. show the math
Physics
High School
the figure shows three pairs of polarizers. the double arrow drawn on each polarizer represents the direction of polarization. if the incident light is unpolarized, which pair lets the most light pass?
Physics
High School
the magnitude of the component of the force that does the work is 43 n. how much work is done on a bookshelf being pulled 5 m at an angle of 37o from the horizontal?
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