Mindblown: a blog about philosophy.
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A hunter aims directly at a target (on the same level) 140 m away. If the bullet leaves the gun at a speed of 280 m/s, by how much will the bullet miss the target?
A hunter aims directly at a target (on the same level) 140 m away. If the bullet leaves the gun at a speed of 280 m/s, by how much will the bullet miss the target? In projectile motion constant horizontal velocity Vx is assumed. Time to reach target is T = 140m / Vx = 0.5 s Vertical…
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Replace the force system acting on the frame by a resultant force and couple moment at point A.
Replace the force system acting on the frame by a resultant force and couple moment at point A. Take F_1 = 8kN , F_2 = 4kN , F_3 = 3kN. Determine the magnitude of the resultant force. Determine the angle between the resultant force and the x axis. Determine the moment of the resultant force…
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What are the first three harmonics of a note produced on a 31.0 cm long violin string if waves on this string have a speed of 274.4m/s?
What are the first three harmonics of a note produced on a 31.0 cm long violin string if waves on this string have a speed of 274.4m/s? Wavelengths are 62 cm 31 cm and 62 / 3 = 20.67 cm The frequencies associated with these wavelengths ( which are the 1st, 2nd and 3rd harmonics )…
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How to get the average velocity if the angle, distance and time are given?
Distance=2 Time=1.17 seconds Angle= 30 degrees What is the Average Velocity? = v = 2/1.17 = 1.7 m/sec 30 degrees, northeast
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A pencil sharpener takes 1.4 seconds to go from its maximum speed of 8π rad/s to rest.
A pencil sharpener takes 1.4 seconds to go from its maximum speed of 8π rad/s to rest. How many rotations will the pencil sharpener make before it stops? Starting from rest. A DVD takes 0.2 seconds to get its maximum rotational velocity of 14π r radiant per second. What is the angular acceleration of the DVD? Jordan…
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A 18.1-kg block and a 32.6-kg block are resting on a horizontal frictionless surface.
A 18.1-kg block and a 32.6-kg block are resting on a horizontal frictionless surface. Between the two is squeezed a spring (spring constant = 1580 N/m). The spring is compressed by 0.160 m from its unstrained length and is not attached permanently to either block. With what speeds do (a) the 18.1-kg block and (b)…
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What is the Average Velocity of the Ball?
A tennis ball with a velocity of 11.4 m/s to the right is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a velocity of -10.1 m/s to the left. If the ball is in contact with the wall for 0.011 seconds, what is the average velocity…
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What Happens to Water when Heat of the Pressure does/not get Transferred into the Water
You have a finite quantity of water which you are able to compress in an apparatus. The apparatus is theoretical and cannot break, and the amount of pressure it can apply to the water is both uniform and unlimited. Additionally, the apparatus is both air tight and water tight. Two answers are required. Describe what…
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Torque and Angular Acceleration
Learning Goal: To understand and apply the formula τ =Iɑ to rigid objects rotating about a fixed axis. To find the acceleration ɑ of a particle of mass m, we use Newton’s second law: , where is the net force acting on the particle. To find the angular acceleration ɑ of a rigid object rotating about a fixed axis, we can use a similar formula: τnet…
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Torque Magnitude Ranking Task
The wrench in the figure has six forces of equal magnitude acting on it. A) Rank these forces (A through F) on the basis of the magnitude of the torque they apply to the wrench, measured about an axis centered on the bolt. =>
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