A worker drives a 0.560 kg spike into a rail tie with a 2.76 kg sledgehammer....
A worker drives a 0.560 kg spike into a rail tie with a 2.76 kg sledgehammer. The hammer hits the spike with a speed of 63.5 m/s. If one fifth of the hammer’s kinetic energy is converted to the internal energy of the hammer and spike, how much does the total internal energy increase? Answer in units of J
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A worker drives a 0.560 kg spike into a rail tie with a 2.76 kg
sledgehammer....
Just asking help with Part I A factory worker pushes a 30.0 kg crate a distance...
Just asking help with Part I
A factory worker pushes a 30.0 kg crate a distance of 4.40 m along a level floor by pushing downward at an angle of 28.0° below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.260. The Crate is Pushed with Increasing Speed Now assume that, instead of the previous situation, the worker pushes harder (without changing the direction of his push), so that the crate moves with increasing speed....
A crate of mass 10.8 kg is pulled up a rough incline with an initial speed...
A crate of mass 10.8 kg is pulled up a rough incline with an initial speed of 1.48 m/s. The pulling force is 98 N parallel to the incline, which makes an angle of 19.4° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 5.08 m. (a) How much work is done by the gravitational force on the crate? J (b) Determine the increase in internal energy of the crate–incline system owing to friction....
A crate of mass 10.6 kg is pulled up a rough incline with an initial speed...
A crate of mass 10.6 kg is pulled up a rough incline with an initial speed of 1.52 m/s. The pulling force is 106 N parallel to the incline, which makes an angle of 19.4 degree with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 5.06 m. How much work is done by the gravitational force on the crate? J Determine the increase in internal energy of the crate-incline system owing to friction. J...
A 6.9 kg block with a speed of 4.8 m/s collides with a 13.8 kg block...
A 6.9 kg block with a speed of 4.8 m/s collides with a 13.8 kg block that has a speed of 3.2 m/s in the same direction. After the collision, the 13.8 kg block is observed to be traveling in the original direction with a speed of 4.0 m/s. (a) What is the velocity of the 6.9 kg block immediately after the collision? (b) By how much does the total kinetic energy of the system of two blocks change because...
A crate of mass 10.8 kg is pulled up a rough incline with an initial speed...
A crate of mass 10.8 kg is pulled up a rough incline with an initial speed of 1.52 m/s. The pulling force is 94 N parallel to the incline, which makes an angle of 20.8° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 4.94 m. (a) How much work is done by the gravitational force on the crate? (b) Determine the increase in internal energy of the crate–incline system owing to friction. (J)...
A crate of mass 9.6 kg is pulled up a rough incline with an initial speed...
A crate of mass 9.6 kg is pulled up a rough incline with an initial speed of 1.58 m/s. The pulling force is 94 N parallel to the incline, which makes an angle of 20.2° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 5.02 m. (a) How much work is done by the gravitational force on the crate? 159.82 You have the correct magnitude of the work, but think carefully about the sign....
RU' (J/ky"К) 2150 Aluminum 921 Acetone Brass 402 Benzene 1800 377 Bromine Ethyl alcohol 470 2400...
RU' (J/ky"К) 2150 Aluminum 921 Acetone Brass 402 Benzene 1800 377 Bromine Ethyl alcohol 470 2400 840 126 Gasoline 2220 2095 461 Copper Glass Gold Ice Iron Lead Nickel Silver Styrofoam Zinc 130 502 Glycerin Kerosene Mercury Olive oil Petroleum Toluene Water 2430 2010 140 1970 2130 1720 4186 239 1131 390 Part 1: Bullet A 67 g bullet is fired from a height of 270 m. The initial speed of the bullet is 104 m/s. The bullet eventually comes...
Two masses, mA = 29.0 kg and mg = 42.0 kg are connected by a rope...
Two masses, mA = 29.0 kg and mg = 42.0 kg are connected by a rope that hangs over a pulley (as in the figure). The pulley is a uniform cylinder of radius R. 0.311 m and mass 3.4 kg. Initially, mis on the ground and mp rests 2.5 m above the ground. MA 25 m Part A If the system is now released, use conservation of energy to determine the speed of me just before it strikes the ground....
Thermo: Calorimetry - KE, PE, & Q SOLIDS Specific heat Material (J/kg.K) Aluminum 921 LIQUIDS Material...
Thermo: Calorimetry - KE, PE, & Q
SOLIDS Specific heat Material (J/kg.K) Aluminum 921 LIQUIDS Material Specific heat (J/kg.K) Acetone 2150 Brass 402 Benzene 1800 Copper 377 Bromine 470 Glass 840 Ethyl alcohol 2400 Gold 126 Gasoline 2220 Ice 2095 Glycerin 2430 Iron 461 Kerosene 2010 Lead 130 Mercury 140 Nickel 502 Olive oil 1970 2130 Silver 239 Petroleum Styrofoam 1131 Toluene 1720 Zinc 390 Water 4186 Part 1: Bullet A 94 g bullet is fired from a height of...
Question 11 A hollow sphere of radius 0.220 m, with rotational inertia I = 0.0728 kg-m2...
Question 11 A hollow sphere of radius 0.220 m, with rotational inertia I = 0.0728 kg-m2 about a line through its center of mass, rolls without slipping up a surface inclined at 33.7° to the horizontal. At a certain initial position, the sphere's total kinetic energy is 36.0 J. (a) How much of this initial kinetic energy is rotational? (b) What is the speed of the center of mass of the sphere at the initial position? When the sphere has...
Just asking help with Part I
A factory worker pushes a 30.0 kg crate a distance of 4.40 m along a level floor by pushing downward at an angle of 28.0° below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.260. The Crate is Pushed with Increasing Speed Now assume that, instead of the previous situation, the worker pushes harder (without changing the direction of his push), so that the crate moves with increasing speed....
A crate of mass 10.6 kg is pulled up a rough incline with an initial speed of 1.52 m/s. The pulling force is 106 N parallel to the incline, which makes an angle of 19.4 degree with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 5.06 m. How much work is done by the gravitational force on the crate? J Determine the increase in internal energy of the crate-incline system owing to friction. J...
A 6.9 kg block with a speed of 4.8 m/s collides with a 13.8 kg block that has a speed of 3.2 m/s in the same direction. After the collision, the 13.8 kg block is observed to be traveling in the original direction with a speed of 4.0 m/s. (a) What is the velocity of the 6.9 kg block immediately after the collision? (b) By how much does the total kinetic energy of the system of two blocks change because...
A crate of mass 9.6 kg is pulled up a rough incline with an initial speed of 1.58 m/s. The pulling force is 94 N parallel to the incline, which makes an angle of 20.2° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 5.02 m. (a) How much work is done by the gravitational force on the crate? 159.82 You have the correct magnitude of the work, but think carefully about the sign....
RU' (J/ky"К) 2150 Aluminum 921 Acetone Brass 402 Benzene 1800 377 Bromine Ethyl alcohol 470 2400 840 126 Gasoline 2220 2095 461 Copper Glass Gold Ice Iron Lead Nickel Silver Styrofoam Zinc 130 502 Glycerin Kerosene Mercury Olive oil Petroleum Toluene Water 2430 2010 140 1970 2130 1720 4186 239 1131 390 Part 1: Bullet A 67 g bullet is fired from a height of 270 m. The initial speed of the bullet is 104 m/s. The bullet eventually comes...
Two masses, mA = 29.0 kg and mg = 42.0 kg are connected by a rope that hangs over a pulley (as in the figure). The pulley is a uniform cylinder of radius R. 0.311 m and mass 3.4 kg. Initially, mis on the ground and mp rests 2.5 m above the ground. MA 25 m Part A If the system is now released, use conservation of energy to determine the speed of me just before it strikes the ground....
Thermo: Calorimetry - KE, PE, & Q
SOLIDS Specific heat Material (J/kg.K) Aluminum 921 LIQUIDS Material Specific heat (J/kg.K) Acetone 2150 Brass 402 Benzene 1800 Copper 377 Bromine 470 Glass 840 Ethyl alcohol 2400 Gold 126 Gasoline 2220 Ice 2095 Glycerin 2430 Iron 461 Kerosene 2010 Lead 130 Mercury 140 Nickel 502 Olive oil 1970 2130 Silver 239 Petroleum Styrofoam 1131 Toluene 1720 Zinc 390 Water 4186 Part 1: Bullet A 94 g bullet is fired from a height of...
Question 11 A hollow sphere of radius 0.220 m, with rotational inertia I = 0.0728 kg-m2 about a line through its center of mass, rolls without slipping up a surface inclined at 33.7° to the horizontal. At a certain initial position, the sphere's total kinetic energy is 36.0 J. (a) How much of this initial kinetic energy is rotational? (b) What is the speed of the center of mass of the sphere at the initial position? When the sphere has...
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