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In Problems 66 through 68 you are given the equation used to solve a problem. For each of these, you are to
- Write a realistic problem for which this is the correct equation.
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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
- A suspicious physics student watches a stunt performed at an ice show. In the stunt, a performer shoots an arrow into a bale of hay (Fig. P11.24). Another performer rides on the bale of hay like a cowboy. After the arrow enters the bale, the balearrow system slides roughly 5 m along the ice. Estimate the initial speed of the arrow. Is there a trick to this stunt? FIGURE P11.24arrow_forwardParticles in an ideal gas of molecular oxygen (O2) have an average momentum in the x direction of 2.726 1023 kgm/s. What is a. their root mean square speed and b. the root mean square of their x component of velocity.arrow_forwardAn Isotope Separator. Hydrogen has three isotopes 'H (m1 = mp),arrow_forwardUsing Area-Moment Method. Consider 150 mm x 150 mm section and E = 80 GPa. a=2.8 b=24.0 c=28 Determine the following: Vertical Reaction at B in kN. Moment Reaction at A in kN-m.arrow_forwardOne mole of helium atoms has a mass of 4 grams. If a helium atom in a balloon has a kinetic energy of 1.666e-21 J, what is the speed of the helium atom? (The speed is much lower than the speed of light.) V = m/s Additional Materials O eBookarrow_forwardWhen determining the reactions at joints A, B, and C, what is the minimum number of unknowns for solving this ?problem 0.8 m 0.9 m 500 N 45° 0.5 m 1.2 m 0.4 m 4 a O 5 .b 0 6 .cO 3 d Oarrow_forward4arrow_forwardEXCEL Spring Problem: An experiment is conducted to determine the value of a spring constant. Objects of varied mass are suspended from the spring and the spring deflections are measured. The results are as follows: Mass, m (kg) Deflection, x (mm) 5.3 15 7.1 22 10.2 31 12 38 15.4 45 Use EXCEL to determine the spring constant, k, in N/m.arrow_forwardgarrow_forwardC. Solve GPE = 2.4 x 10 x 1 = 24 J 2. If (on earth) an object falls 18 m and loses 36 J of GPE. What is the object's mass? What are you solving for mass= g = 9.8 or 10 m.s? What is the Formula a. %3D b. С. Solve 3. A 1 Kg object loses 20 J of GPE as it falls. How far does it fall? a. What are you solving for b. What is the Formula С. Solve 4. A small, 2 kg weight is dropped from a 12 m platform. What is the change in potential energy? a. What are you solving for b. What is the Formula с. Solve 5. A small, 3 kg weight is moved from 5 m from the ground to 8 m. What is the change in potential energy? i. What are you solving for ii. What is the Formulaarrow_forwardA coin is tossed straight up with an initial speed of 20 m/s from a surface. When the coin returned it falls into a 10 m deep PVC pipe below the surface. a. What is the coins velocity as it reaches the bottom of the PVC pipe? b. How long is the coin in the air, from the moment it is released until it hits the bottom of the hole?arrow_forwardPerform the following arithmetic operations, keeping the correct number of significant figures in your answer. a. The product 56.2 0.154 b. The sum 9.8 + 43.4 + 124 c. The quotient 81.340/arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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