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A block with mass m1 = 9.4 kg is on an incline with an angle ? = 24.0° with respect to the horizontal. For the first question there is no friction, but for the rest of this problem the coefficients of friction are: ?k = 0.23 and ?s = 0.253. * When there is no friction, what is the magnitude of the acceleration of the block? m/s2 * Now with friction, what is the magnitude of the acceleration of the block after it begins to slide down the plane
A 13 cm × 13 cm × 13 cm box containes 0.025 mol of nitrogen at 30°C. What is the rate of collisions (collisions/s) on one wall of the box
Determine the scattering angle of the photon and the electron
A soap bubble strongly reflects light of 463nm, wavelength, if the index of refraction of the film is 1.35, what is the thinnest thickness the soap film can be
If a bullet is fired vertically upwards with the speed calculated in (b), what is the maximum height that the bullet can reach.
To monitor the breathing of a hospital patient, a thin belt is girded around the patient's chest as in the figure below. The belt is a 160-turn coil. find the magnitude of the average induced emf in the coil during that time
You are given a container with 5.0g of hydrogen atoms. What is the total charge on the electrons in the container? What is the total charge on the protons
What minimum heat is needed to bring 230g of water at 20 degrees C to the boiling point and completely boil it away.
A lens system consists of two lenses, one is converging and the other is a diverging lens. A screen is placed 32 cm to the right of the converging lens. Find the focal length of the diverging lens
What is the resistance of a lightbulb that uses an average power of 40.0 W when connected to a 60.0-Hz power source having a maximum voltage of 132 V
A long horizontal hose of diameter 3.2 cm is connected to a faucet. At the other end, there is a nozzle of diameter 1 cm. What is the velocity of the water in the hose
questionassume early universe was composed only of helium instead of hydrogen. a estimate the temperature of cmb when
A glass lens has a convex surface with radius 25.0 cm and a concave surface with a radius of 50.0 cm. The glass has index of refraction of 1.51. Calculate the focal length of this lens
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