Using energy considerations, calculate the average force a 60.1-kg sprinter exerts backward on the track to...
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Using energy considerations, calculate the average force a 60.1-kg
sprinter exerts backward on the track to...
A 0.0850-kg arrow is fired horizontally. If the bowstring exerts an average force of 89.0 N...
A 0.0850-kg arrow is fired horizontally. If the bowstring exerts an average force of 89.0 N on the arrow over a distance of 0.782 m, with what speed does the arrow leave the bow?
A freight train consists of two kg 1000.8 4 − × engines and 45 cars with...
A freight train consists of two kg 1000.8 4 − × engines and 45 cars with average masses of kg 1050.5 4 × . (a) What force must each engine exert backward on the track to accelerate the train at a rate of 2 –2 m/s 10.005 × if the force of friction is N 1050.7 5× , assuming the engines exert identical forces? This is not a large frictional force for such a massive system. Rolling friction for trains...
A javelin thrower exerts a horizontal force of 300 N on a 3 kg javelin during...
A javelin thrower exerts a horizontal force of 300 N on a 3 kg javelin during the execution of a throw (assume vertical force is equal to 0 N). Over the course of the throw, his hand and the javelin move through a horizontal displacement of 2.0 m. If the javelin’s initial horizontal velocity is equal to 0 m/s, how would the gravitational potential energy change over the course of the throw? a. Gravitational potential energy will increase b. Gravitational...
A horizontal force of 80 N acts on a mass of 6 kg resting on a horizontal surface, as shown in Figure 5. The mass is initially at rest and covers a distance of 5 m in 0.92 s under the action of the f...
A horizontal force of 80 N acts on a mass of 6 kg resting on a horizontal surface, as shown in Figure 5. The mass is initially at rest and covers a distance of 5 m in 0.92 s under the action of the force. Assuming there are no energy losses due to air resistance and therefore that the acceleration is constant (a) (b) (c) (d) Calculate the total energy expended in the acceleration. Plot a graph of the kinetic...
Assignment 9 If you run around a half-mile track twice in 20 minutes a. What is...
Assignment 9 If you run around a half-mile track twice in 20 minutes a. What is the total distance traveled? b. What is the speed in mi/hr (show work)? c. What is the total displacement? d. What is the velocity in mi/hr? You travel east 2 miles and then turn to the north and walk another 3 miles. What is your displacement (show work, make sure to show the direction as well)? You travel 6 miles at 40 degrees. How...
A 30.0-kg crate is pushed across a rough floor by a horizontal force of 100 N...
A 30.0-kg crate is pushed across a rough floor by a horizontal force of 100 N of kinetic fiction between the crate and the floor is 0.100. If a total of 80.5 1 of work the crate, how far was it moved along the floor? done 21. Find the magnitude of the force ating on a 3.0-kg (assume all units in MKSo-ms cated at -2.0 m inside a potential 22. Which one of the following statements is false? More power...
Consider a father pushing a child on a playground merry-go-round. The system has a moment of...
Consider a father pushing a child on a playground merry-go-round. The system has a moment of inertia of 84.4 kg · m2. The father exerts a force on the merry-go-round perpendicular to its 1.50 m radius to achieve a torque of 375 N · m. (a) Calculate the rotational kinetic energy (in J) in the merry-go-round plus child when they have an angular velocity of 10.0 rpm. ___J (b) Using energy considerations, find the number of revolutions the father will...
i need help with 1, 2, 5, 6 1 Using 0.100 kg as the mass, and the value of your experimental force constant, calcul...
i
need help with 1, 2, 5, 6
1 Using 0.100 kg as the mass, and the value of your experimental force constant, calculate the theoretical value of the period for your spring mass system. (S points) Calculate the % error between your experimental and calculated period. (5 points) 2. 3. In theory, relative to the equilibrium position, where is the mass when its speed is at its maximum? (5 points) At this pasrtian, Kinetic eneray is maximunm and poterntial...
When a running football player “throws” his right foot down and behind him, as in this...
When a running football player “throws” his right foot down and behind him, as in this sketch, what happens in reaction is: He begins to fall backward. Counter-rotational torque applies. The ground pushes up and forward. The ground exerts no force on him. An electron from a hydrogen atom, an electron from an oxygen atom. has a greater charge than is larger than has a greater mass than is identical to In the kinetic theory of gases, the average outward...
It is possible, using basic lab equipment, to observe the force that a magnet exerts on...
It is possible, using basic lab equipment, to observe the force that a magnet exerts on current in a wire. Equipment:DC Power Supply (3A preferred), Long Banana wire, Large Pasco C Magnet, 1 gm sensitivity food scale. (There will only be a few systems set up. Your TA's will direct you in sharing their use.) Theory: The force due to a magnetic field on a straight wire carrying a current in a uniform B field is: F = iL x...
A horizontal force of 80 N acts on a mass of 6 kg resting on a horizontal surface, as shown in Figure 5. The mass is initially at rest and covers a distance of 5 m in 0.92 s under the action of the force. Assuming there are no energy losses due to air resistance and therefore that the acceleration is constant (a) (b) (c) (d) Calculate the total energy expended in the acceleration. Plot a graph of the kinetic...
A 30.0-kg crate is pushed across a rough floor by a horizontal force of 100 N of kinetic fiction between the crate and the floor is 0.100. If a total of 80.5 1 of work the crate, how far was it moved along the floor? done 21. Find the magnitude of the force ating on a 3.0-kg (assume all units in MKSo-ms cated at -2.0 m inside a potential 22. Which one of the following statements is false? More power...
i
need help with 1, 2, 5, 6
1 Using 0.100 kg as the mass, and the value of your experimental force constant, calculate the theoretical value of the period for your spring mass system. (S points) Calculate the % error between your experimental and calculated period. (5 points) 2. 3. In theory, relative to the equilibrium position, where is the mass when its speed is at its maximum? (5 points) At this pasrtian, Kinetic eneray is maximunm and poterntial...
When a running football player “throws” his right foot down and behind him, as in this sketch, what happens in reaction is: He begins to fall backward. Counter-rotational torque applies. The ground pushes up and forward. The ground exerts no force on him. An electron from a hydrogen atom, an electron from an oxygen atom. has a greater charge than is larger than has a greater mass than is identical to In the kinetic theory of gases, the average outward...
It is possible, using basic lab equipment, to observe the force that a magnet exerts on current in a wire. Equipment:DC Power Supply (3A preferred), Long Banana wire, Large Pasco C Magnet, 1 gm sensitivity food scale. (There will only be a few systems set up. Your TA's will direct you in sharing their use.) Theory: The force due to a magnetic field on a straight wire carrying a current in a uniform B field is: F = iL x...
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