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Three forces, 1, 2, and 3, all act on an object, as shown in the figure. The magnitudes of the forces are: F1 = 80.0 N and is 300 below positive x axis, F2 = 60.0 N and it makes 900 with positive x azis, and F3 = 40.0 N and it makes 1800 with positive x axis. The resultant force acting on the object is given by
a. 180 N at an angle of 60.0° with respect to +x-axis.b. 40.0 N at an angle of 60.0° with respect to +x-axis.c. 20.0 N at an angle of 34.3° with respect to +x-axis.d. 35.5 N at an angle of 34.3° with respect to +x-axis.e. 60.0 N at an angle of 90.0° with respect to +x-axis.
A 7.00 kg bowling ball moves at 2.30m/s. How fast must a 2.60g Ping-Pong ball move so that the two balls have the same kinetic energy.
Two plane waves have the same omega, k and amplitude E, but opposite circular polarisations (i.e. left and right). Show that the superposition of the two waves is linearly polarised, with amplitude 2E.
A transverse traveling wave on a cord is represented by D = 0.25 sin (6.8x + 28t) where D and x are in meters and t is in seconds. Determine maximum and minimum speeds of particles of the cord
The blackbody radiation emitted from a furnace peaks at a wavelength of 2.7 10-6 m(0.0000027 m). What is the temperature inside the furnace?
If the radius of Earth decreased, with no change in mass, your weight would......?
What would be the gravitational force magnitude exerted by each of two 5.80 cm diameter balls on the other, if they were made of nuclear matter? Suppose that their enters are 0.9 m apart.
Astronomers discover an exoplanet (a planet of a star other than the Sun) that has an orbital period of 3.47 Earth years in its circular orbit around its sun, Find the radius of the exoplanet's orbit
X - rays with an energy of 100 KeV Compton scattering from a target. If the scattered rays are detected at 40° relative to the incident rays, find a) The compton wavelength shift ?λ at this angle. b) The energy of the scattered x- ray.
When a force of 3 N was applied, the speed of an object was increased from 20 m/s to 50 m/s in 2 seconds. What is the mass of this object
Why do electrons move? Draw a diagram of the battery, label the flow of electrons. The flow of current (+) is opposite; draw this and note if toward or away from + terminal of the battery.
In a certain experiment, the pressure of a gas depends on the volume by P=alphaV^3+betaV^2, What is the work done on the gas
A person is nearsighted and can clearly focus on objects that are no farther than 2.6 m away from her eyes. What is the focal length of the borrowed glasses
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