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A gardener pushes a box of tools across a driveway by applying a 20.5- N force that pushes downward at an angle of 34.9 o with respect to the horizontal. How much work is done if the box moves 2.75 m in the horizontal direction?
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Question: At t=0 a grinding wheel has an angular velocity of 30.0rad/s . It has a constant angular acceleration of 27.0rad/s^2 until a circuit breaker trips at time t = 1.60s . From then on, it turns through an angle 433 ...
Can you please explain how to get an answer for this question and what formula to use step by step and why. "In a race you first ride a bicycle at an anverage speed of 18.4 mi/h for 19.5 miles, then you must run for anot ...
A body moving with uniform acceleration has a velocity of 18.9 cm/s when its x coordinate is 1.88 cm. If its x coordinate 2.68 s later is -5.03 cm, what is the x-component of its acceleration? Answer in units of cm/s2.
PART A: Find Leslie's average speed when she runs to the store 14 km away in 24 min Express your answer to two significant figures and include the appropriate units. PART B: How fast is this in m/s? Express your answer t ...
Question: A rifle with a barrel length of 57 cm fires a 11 g bullet with a horizontal speed of 370 m/s . The bullet strikes a block of wood and penetrates to a depth of 12 cm . 1- What resistive force (assumed to be cons ...
Question: A person is diving in a lake in the depth of h = 7.5 m. The density of the water is ? = 1.0 x103 kg/m3. The pressure of the atmosphere is P0 = 1.0 x 105 Pa. The surface area of the top of the person's head is A ...
Question: Suppose the emf generated by a coil rotating in a magnetic field is zero at t=0, and increases to its first peak at t0=0.11ms. A) What is the angular velocity of the coil in rad/s? B) At what time (relative to ...
Question: Part A: How many different values of l are possible for an electron with principal quantum number n = 3? Express your answer as an integer. Part B: How many values of ml are possible for an electron with orbita ...
Question: A parallel-plate vacuum capacitor is connected to a battery and charged until the stored electric energy is . The battery is removed, and then a dielectric material with dielectric constant is inserted into the ...
Question: A plastic rod that has been charged to -15 nC touches a metalsphere. Afterward, the rod's charge is -10 nC. a. What kind of charged particle was transferred between the rodand the sphere, and in which direction ...
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