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The place you get your hair cut has two nearly parallel mirrors 8.00apart. As you sit in the chair, your head is 2.50 from the nearer mirror. Looking toward this mirror, you first see your face and then, farther away, the back of your head. (The mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) neglect thickness of head. How far away does the back of your head appear to be?
What is the force exerted by the scale if the elevator is accelerating downward with an acceleration of 2.6 m/s2. If the elevator's descending speed is measured at 10 m/s at a given point, but its speed is decreasing by 2.6 m/s2, illustrate what is ..
A 5.0 kg textbook is raised a distance of 30 cm as a student prepares to leave for school. How much work did the student do on the textbook
A 80kg football player is moving at 5.7m/s to the east; a 140kg player is moving at 5.4m/s to the west. While they are still in the air, how fast is the pair moving
A baseball player runs 27.4meters from the batter's box to first base,overruns first base by 3.0 meters,and then returns to first base. Compared to total distance traveled by the player,the magnitude of the players total displacement from the batt..
A particle initially located at the origin has an acceleration of = 4.00 m/s2 and an initial velocity of i = 6.00 m/s. Find the speed of the particle at t = 3.00 s
A projectile is fired from point 0 at the edge of a cliff, with initial velocity components of v0x=60 m/s and v0y=175 m/s, What is the magnitude of the velocity of the projectile 21.0s after it is fired
You are going to change the angle phi2 of applied force on the right side of the Equal Arm Balance keeping the holding force constant and the Balance in equilibrium
A person fishing from a pier observes that four wave crests pass by in 7.0 s and estimates that the distance between two successive crests is 4.0 m. What is the speed of the wave
A solid sphere has a temperature of 408 K. The sphere is melted down and recast into a cube that has the same emissivity, What is the cube's temperature
Two 10.0 cm diameter electrodes 0.52 cm apart form a parallel-plate capacitor. What is the potential difference between the electrodes
The speed of the ball at the top of the circle is 12.9 m/s. The acceleration of gravity is 9.8 m/s2 . If the ball is released at the bottom of the circle, what is its speed upon release
A baseball has a velocity of 43.6 m/s (97.5 mi/h), directed horizontally, as it is released by a pitcher. Calculate the ball's instantaneous acceleration just before it is released
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