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Physics
Physics
High School
Helppp pleaseee!!!You are playing marbles. Your 0.10 kg shooter traveling at 1 m/s hits a stationary 0.05 kg marble straight on. If it is an elastic collision, and the shooter comes to a stop, what is the velocity of the second marble?
Physics
High School
a cylinder is filled with of gas and a piston is put into it. the initial pressure of the gas is measured to be . the piston is now pulled up, expanding the gas, until the gas has a final volume of . calculate the final pressure of the gas. round your answer to significant digits.g
Physics
High School
9. a body travels at an initial speed of 1.5 m/s. given a constant acceleration of 0.2 m/s2, what is the speed of the body at time 25 seconds later?
Physics
High School
with respect to saving energy, what aspect of using two-sided printing was discussed in class as providing the most signifiant benefit?
Physics
High School
a string with a length of 0.75 m is fixed at both ends. what is the longest possible wavelength for the traveling waves that can interfere to form a standing wave on this string
Physics
High School
Does lack of sleep make injuries heal slower?
Physics
College
Alex drives 1900 meters in 200 s. Assuming he does not speed up or slow down, what is his speed?
Physics
High School
a type ii cepheid has an apparent magnitude of 15 and a pulsation period of 10 days. determine the distance to the cepheid variable.
Physics
High School
(b) the shoe is in contact with the initially stationary 0.500 kg football for 20.0 ms. what average force is exerted on the football to give it a velocity of 20.0 m/s?
Physics
High School
four children stand at edge of a circular horizontal platform that is free to rotate about a vertical axis. each child has a mass of 35 kg and are at positions that are a quarter circle from each other. the platform has a moment of inertia equal to 500 kg*m2 and a radius of 2.0 m. the system is initially rotating at 6.0 rev/min. the children walk toward the center of the platform until they are 0.50 m from the center. (a) what is the rotational speed of the platform when the children are at the 0.50 m positions? (b) what is the change in rotational kinetic energy of the system? {-116 j}
Physics
High School
If the spring is stretched an additional 0. 130 m and released, how long does it take to reach the (new) equilibrium position again?.
Physics
High School
which type of rigid transformation is the equivalent of two reflections across intersecting lines?
Physics
College
A future space vehicle massing 250,00 kilograms lifts off vertically from the lunar surface at a net acceleration of 3.27 m/s^2. What is the net force that the Moon exerts on the space vehicle, in Newtons?
Physics
High School
A college student is working on her physics homework in her dorm room. her room contains a total of 6.010^26 gas molecules. as she works, her body is converting chemical energy into thermal energy at a rate of 125 w. If her dorm room were an isolated system (dorm rooms can certainly feel like that) and if all of this thermal energy were transferred to the air in the room, by how much would the temperature increase in 17 min? Use the ideal gas model.
Physics
High School
question content area top part 1 a riverboat travels 78 km downstream in 3 hours. it travels 80 km upstream in 4 hours. find the speed of the boat and the speed of the stream.
Physics
High School
what is the wavelength of light falling on doubleslits separated byif the third-ordermaximum is at an angle of?
Physics
High School
blue whales apparently communicate with each other using sound of frequency 17 hzhz , which can be heard nearly 1000 kmkm away in the ocean. what is the wavelength of such a sound in seawater, where the speed of sound is 1537 m/sm/s ? express your answer in meters.
Physics
High School
________ focuses on problem solving and performance improvement, or speed with excellence, of a well-defined project.
Physics
High School
how large is the portion of light visible to humans related to the spectrum of electromagnetic ap psych
Physics
High School
(PLEASE HURRY)a train travels 8.81m/s in a -51.0 degree direction. the train accelerates for 2.23s, changing its velocity to 9.66m/s in a 37.0 degree direction. what is delta x?(its not 25.4)
Physics
High School
an object of mass 5 kg sits on an inclined plane that makes 300 angle with horizontal. what is the normal force?
Physics
College
Neglecting air resistance, what would happen if you were apassenger in a convertible car traveling at a constant velocityand threw a ball straight up in the air?
Physics
High School
d.consider the temperature changes over the last 130 years. has the temperature increased, decreased or stayed the same?
Physics
High School
true or false: although wood is an insulator, lightning can travel through a tree to reach the earth.
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