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A boy shoots a rock with initial velocity of 40 m/s straight up from his slingshot. He quickly reloads and shoots another rock in the same way 4.0 s later.
(a) At what time do the rocks meet?
(b) At what height do the rocks meet?
(c) What is the velocity of each rock when they meet?
The carbon isotope 14C is used for carbon dating of archeological artifacts. 14C ( mass 2.34×10?26kg) decays by the process known as beta decay in which the nucleus emits an electron, What is the recoil speed of the nucleus
A gymnast with mass m1 = 40 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 110 kg and length L = 5 m. Each support is 1/3 of the way from each end. at first the gymnast stands at the left end of..
question1alan leaves university of lethbridge at 800am to drive to au 650 km away. he leaves at an average speed of
In a non-uniform gas, the equation of state is valid locally, as long as the density does not change too rapidly with position. Consider a column of ideal gas under gravity at constant temperature. Find the density as a function of height, by bala..
An oscilloscope shows a steady sinusoidal signal of 5 Volt peak to peak, which spans 5 cm in vertical direction on the screen. What will be observed on the oscilloscope screen
A Ferris wheel is moving at an initial angular velocity of 1.0 rev/54s. If the operator then brings it to a stop in3.4min, what is the angular acceleration of the Ferris wheel
Two musicians are comparing their clarinets. The first clarinet produces a tone that is known to be 442Hz, If the second clarinet produces a higher pitched tone than the first clarinet, what is the second clarinet's frequency
If the average molecular mass of compounds in food is 47.5, how many molecules are there in 1.00 kg of food, Find the ratio of ion pairs to molecules
An automobile tire has a radius of 0.325 m, and its center moves forward with a linear speed of v = 24.8 m/s. Determine the angular speed of the wheel
a 1cm-tall object is 6cm in front of a converging lens with a focal length of 10cm. Use ray tracting to determine the location of the image on graph, Calculate the image position and height using the lens equation
An ac source of period T and maximum voltage V is connected to a single unknown ideal element that is either a resistor, an inductor, or a capacitor. At time t=0 the voltage is zero.
Two masses are placed on the x axis. The first mass 320kg is located at x = 310cm , the second mass 660kg is at the origin
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