Science

A 100m steel bridge sits on two concrete abutments and has a mass has a mass of about 1.00×105 kg. Its CG is in the middle of the bridge. A car of 1000 kg is located 40 m from the left end of the bridge and a truck with a mass of 5000 kg is located 60 meters from the same end.

A 100m Steel Bridge Sits On Two Concrete Abutments And Has A Mass Has A Mass Of About 1.00×105&Nbsp;Kg. Its CG Is In The Middle Of The Bridge. A Car Of 1000 Kg Is Located 40 M From The Left End Of The Bridge And A Truck With A Mass Of 5000 Kg Is Located …

A 100m steel bridge sits on two concrete abutments and has a mass has a mass of about 1.00×105 kg. Its CG is in the middle of the bridge. A car of 1000 kg is located 40 m from the left end of the bridge and a truck with a mass of 5000 kg is located 60 meters from the same end. Read More »

A strip of copper 120 µm wide is placed in a uniform magnetic field of magnitude 0.67 T, perpendicular to the strip. A current i = 23 A is then sent through the strip. Find the ratio of the Hall electric field E to the electric field EC responsible for moving charge (the current) along the length of the strip (E/EC). (The number of charge carriers per unit volume for copper is 8.47 × 1028 electrons/m3and its resistivity is 1.69 × 10-8 ohm-m.)

A strip of copper 120 µm wide is placed in a uniform magnetic field of magnitude 0.67 T, perpendicular to the strip. A current i = 23 A is then sent through the strip. Find the ratio of the Hall electric field E to the electric field EC responsible for moving charge (the current) along the length of the strip (E/EC). …

A strip of copper 120 µm wide is placed in a uniform magnetic field of magnitude 0.67 T, perpendicular to the strip. A current i = 23 A is then sent through the strip. Find the ratio of the Hall electric field E to the electric field EC responsible for moving charge (the current) along the length of the strip (E/EC). (The number of charge carriers per unit volume for copper is 8.47 × 1028 electrons/m3and its resistivity is 1.69 × 10-8 ohm-m.) Read More »

Problem 1: Consider a system as shown. Mass m1 moves up the ramp (angle 6) and mass m2 moves down with acceleration a. The pulley (which is a disk of mass M and radius R) rotates with angular acceleration α. The coefficient of kinetic friction between block 1 and the ramp is Me 72 0 m2 Part 1: What is the acceleration of each block a m2 Part 2: What is the tension, T1 and T2 in each portion of the string? Part 3: If the system starts from rest, what is the speed, v of each block and the angular speed, pulley when mass m2 has dropped a distance h? of the

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A spring is mounted vertically at the bottom of an empty swimming pool. A block of mass= 596 kg is attached to the spring, and it compresses the spring from its equilibrium position by distance xo. Now the swimming pool is filled with fresh water, and the block is submerged. You find the the spring is now extended distance x = 1.61xo from its equilibrium position. Find the density of the block.3kg/m3

A spring is mounted vertically at the bottom of an empty swimming pool. A block of mass M = 596 kg is attached to the spring, and it compresses the spring from its equilibrium position by distance xo. Now the swimming pool is filled with fresh water, and the block is submerged. You find the the spring is …

A spring is mounted vertically at the bottom of an empty swimming pool. A block of mass= 596 kg is attached to the spring, and it compresses the spring from its equilibrium position by distance xo. Now the swimming pool is filled with fresh water, and the block is submerged. You find the the spring is now extended distance x = 1.61xo from its equilibrium position. Find the density of the block.3kg/m3
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The Sunshine Skyway Bridge is 131 m high. A truck crossing the bridge loses a piece of cargo, launching it horizontally and perpendicularly off the bridge at 75 miles per hour. How far does the object travel horizontally before it hits the water?

The Sunshine Skyway Bridge is 131 m high. A truck crossing the bridge loses a piece of cargo, launching it horizontally and perpendicularly off the bridge at 75 miles per hour. How far does the object travel horizontally before it hits the water? Group of answer choices 118 m 137 m 173 m 155 m …

The Sunshine Skyway Bridge is 131 m high. A truck crossing the bridge loses a piece of cargo, launching it horizontally and perpendicularly off the bridge at 75 miles per hour. How far does the object travel horizontally before it hits the water? Read More »

Consider the planet Mercury with its ancient surface. Can we assume this planet is geologically dead or it there still some activity? If there is activity provide two pieces of evidence supporting the existence of active processes.

Consider the planet Mercury with its ancient surface. Can we assume this planet is geologically dead or it there still some activity? If there is activity provide two pieces of evidence supporting the existence of active processes. EXPERT ANSWER Mercury is not geologically dead, that we can say it from the surface, it is covered …

Consider the planet Mercury with its ancient surface. Can we assume this planet is geologically dead or it there still some activity? If there is activity provide two pieces of evidence supporting the existence of active processes. Read More »

Relativity Problem 9: Suppose that somewhere in deep space a rock with mass mı = 12 kg is moving in the +x direction with V1,1 = + c in some inertial reference frame. This rock then strikes another rock of mass m2 = 28 kg at rest (V2,i = 0). Pretend that the first rock, instead of instantly vaporizing into a cloud of gas (as any real rocks colliding at this speed would), simply bounces off the more massive rock and is subsequently observed to have an x-velocity V1, f = -5/13. What is the larger rock’s x-velocity V2,f after the collision? [hint: use conservation of (relativistic!) momentum).

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VOTA Ball A is thrown straight up. Which of the following statements about the ball are true at the highest point in its path? Neither the velocity nor the acceleration are zero. The velocity is not zero, but the acceleration is zero. The velocity is zero, but the acceleration is not zero. The velocity and acceleration are both zero.

EXPERT ANSWER (a)when a ball is thrown straight up with initial velocity Vo,the velocity of ball at time t:- V=Vo – gt …………..(1) Because gravity is acting downward. From equation (1) velocity of ball decreases ,so at maximum height velocity of ball(v)=0 (b) gravity is always acting downward,so acceleration of ball at any time is …

VOTA Ball A is thrown straight up. Which of the following statements about the ball are true at the highest point in its path? Neither the velocity nor the acceleration are zero. The velocity is not zero, but the acceleration is zero. The velocity is zero, but the acceleration is not zero. The velocity and acceleration are both zero. Read More »

A thin metal triangular plate (as pictured) has its three edges held at constant temperatures T_a = 130 degree C, T_b = 70 degree C and When the temperature of the plate reaches equilibrium, the temperature of the plate at an internal grid point is approximately the average of the different temperatures of the plate at the surrounding four grid points. Formulate a system of three linear equations that can be solved to determine the internal temperatures t_1, t_2 and t_3. Write the system as an augmented matrix, and then input this matrix using Maple’s Matrix command (make sure that all elements of the augmented matrix are written as whole numbers or fractions here, do not use decimals). The augmented matrix is: ______ Reduce the augmented matrix to row-echelon or reduced row-echelon form and hence determine the approximate temperatures t_1, t_2 and t_3 in degrees Celsius to two decimal places. t_1 = __________(degrees Celsius, to 2 decimal places) t_2 = __ ________ (degrees Celsius, to 2 decimal places) t_2 = __________ (degrees Celisus, to 2 decimal places)

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Human xanthine oxidase catalyzes the oxidation of hypoxanthine to xanthine and can further catalyze the oxidation of xanthine to uric acid. For the treatment of hyperuricemia and gout, several medications are used to inhibit the activity of xanthine oxidase and reduce the production of uric acid. You are a biochemist and just discovered a chemical that can inhibit the activity of the human xanthine oxidase. When analyzing its mode of inhibition, you found that the enzyme inhibitor complex requires 450 J.mol’ to dissociate and that it displays kinetics somehow similar to noncompetitive inhibition. You sent your inhibitor to the ministry of health for approval as a medication for gout. Based on the data provided, are they going to authorize it as a medication or not? Explain?

Human xanthine oxidase catalyzes the oxidation of hypoxanthine to xanthine and can further catalyze the oxidation of xanthine to uric acid. For the treatment of hyperuricemia and gout, several medications are used to inhibit the activity of xanthine oxidase and reduce the production of uric acid. You are a biochemist and just discovered a chemical …

Human xanthine oxidase catalyzes the oxidation of hypoxanthine to xanthine and can further catalyze the oxidation of xanthine to uric acid. For the treatment of hyperuricemia and gout, several medications are used to inhibit the activity of xanthine oxidase and reduce the production of uric acid. You are a biochemist and just discovered a chemical that can inhibit the activity of the human xanthine oxidase. When analyzing its mode of inhibition, you found that the enzyme inhibitor complex requires 450 J.mol’ to dissociate and that it displays kinetics somehow similar to noncompetitive inhibition. You sent your inhibitor to the ministry of health for approval as a medication for gout. Based on the data provided, are they going to authorize it as a medication or not? Explain? Read More »