A 50.0-gram lead bullet hits a steel plate, both initially at 25 °C. The bullet melts...
A 50.0-gram lead bullet hits a steel plate, both initially at 25 °C. The bullet melts and splatters on impact. Assuming that the bullet receives 88% of its kinetic energy as heat energy, at what minimum speed must it be traveling to melt on impact? (The melting temperature of Lead is 327°C)
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A 50.0-gram lead bullet hits a steel plate, both initially at 25
°C. The bullet melts...
A 90.0-gram lead bullet hits a steel plate, both initially at 29 °C. The bullet melts...
A 90.0-gram lead bullet hits a steel plate, both initially at 29 °C. The bullet melts and splatters on impact. Assuming that the bullet receives 76% of its kinetic energy as heat energy, at what minimum speed must it be traveling to melt on impact? (The melting temperature of Lead is 327°C)
A 90.0-gram lead bullet hits a steel plate, both initially at 24 °C. The bullet melts...
A 90.0-gram lead bullet hits a steel plate, both initially at 24 °C. The bullet melts and splatters on impact. Assuming that the bullet receives 74% of its kinetic energy as heat energy, at what minimum speed must it be traveling to melt on impact? (The melting temperature of Lead is 327°C) _____ m/s
A 9 g lead bullet leaves the rifle at a temperature of 110°C and hits a...
A 9 g lead bullet leaves the rifle at a temperature of 110°C and hits a steel plate. If the bullet melts on impact, what is the minimum speed it must have?
A 30.0-g lead bullet leaves a rifle at a temperature of 94.0 degrees celsius and hits...
A 30.0-g lead bullet leaves a rifle at a temperature of 94.0 degrees celsius and hits a steel plate. If the buller melts, what is the minimun speed it must have? _______m/s
#7 Achild and sled with a combined mass of50 kg sliding down a hill from rest...
#7 Achild and sled with a combined mass of50 kg sliding down a hill from rest would 14pts. have the speed of 3.0 m/s at the bottom, if there was no friction. a) What is the height of the hill? If the actual speed at the bottom is 2.5 m/s how much work is done by frction? #8 A 7.00 g lead bullet at 25°C traveling at 250. ms is stopped by a tree. Assuming that 65% 14pts. of the...
With a more realistic estimation, we assume only 90% of the heat generated is absorbed by...
With a more realistic estimation, we assume only 90% of the heat
generated is absorbed by a lead bullet. If the lead bullet is
initially at room temperature of 20.0°C, what is the minimum speed
of the bullet if it just reaches the melting point of 327°C inside
the pine wall when it stops? (As we can see in the next section, it
will take much more energy to actually melt it.)
vmin =
(As you can see from the...
3. A lead bullet (m=0.050kg & V= 5.00x106m) at 20.0°C impacts a block, made of an...
3. A lead bullet (m=0.050kg & V= 5.00x106m) at 20.0°C impacts a block, made of an ideal thermal insulator, and comes to rest at its center. After impact, the temperature of the bullet is 327.0°C. The specific heat capacity of lead is 128J/kg-K. a. Determine the heat absorbed by the bullet during its temperature change. b. What is the final volume of the bullet just after it comes to rest? c. How fast was the bullet traveling prior to hitting...
Please show your work! 6. (2 points) You are given 400 g of coffee (same specific heat as water) at 95.0°C (too hot to S...
Please show your work!
6. (2 points) You are given 400 g of coffee (same specific heat as water) at 95.0°C (too hot to SS drink). How much ice (at 0.0°C) must be added to your coffee in order to cool it to 50.0°C? Neglect heat content of the cup and heat exchanges with the surroundings. Latent heat of fusion of ice is 3.33x10 J/kg: Specific heat of ice is 2100 J/(kgx°C). You must know the specific heat of water....
Please answer question 6. thanks 1. A 7 kg lead sphere that has 35 °C temperature...
Please answer question 6. thanks
1. A 7 kg lead sphere that has 35 °C temperature falls through the air. When the sphere is 15 m above the ground, its speed is 20 m/s. Suppose that when the sphere hits the ground, 75% of its kinetic energy converts to heat that raises its temperature. Specific heat capacity of lead c = 128 J/kg.°C, g=9.8 m/s. A. Setup with a labeled diagram. b. Write down in symbols the energy equation. c....
Answer 25-28 025 10.0 points A steel ball bearing is 4 cm in diameter at 20°C....
Answer 25-28
025 10.0 points A steel ball bearing is 4 cm in diameter at 20°C. A bronze plate has a hole that is 3.996 cm in diameter at 20°C. What common temperature must they have in order for the ball to just squeeze through the hole? Answer in units of C. 026 10.0 points A square hole 5.9 cm along each side is cut in a sheet of copper. Find the change in the area of this hole if...
#7 Achild and sled with a combined mass of50 kg sliding down a hill from rest would 14pts. have the speed of 3.0 m/s at the bottom, if there was no friction. a) What is the height of the hill? If the actual speed at the bottom is 2.5 m/s how much work is done by frction? #8 A 7.00 g lead bullet at 25°C traveling at 250. ms is stopped by a tree. Assuming that 65% 14pts. of the...
With a more realistic estimation, we assume only 90% of the heat
generated is absorbed by a lead bullet. If the lead bullet is
initially at room temperature of 20.0°C, what is the minimum speed
of the bullet if it just reaches the melting point of 327°C inside
the pine wall when it stops? (As we can see in the next section, it
will take much more energy to actually melt it.)
vmin =
(As you can see from the...
3. A lead bullet (m=0.050kg & V= 5.00x106m) at 20.0°C impacts a block, made of an ideal thermal insulator, and comes to rest at its center. After impact, the temperature of the bullet is 327.0°C. The specific heat capacity of lead is 128J/kg-K. a. Determine the heat absorbed by the bullet during its temperature change. b. What is the final volume of the bullet just after it comes to rest? c. How fast was the bullet traveling prior to hitting...
Please show your work!
6. (2 points) You are given 400 g of coffee (same specific heat as water) at 95.0°C (too hot to SS drink). How much ice (at 0.0°C) must be added to your coffee in order to cool it to 50.0°C? Neglect heat content of the cup and heat exchanges with the surroundings. Latent heat of fusion of ice is 3.33x10 J/kg: Specific heat of ice is 2100 J/(kgx°C). You must know the specific heat of water....
Please answer question 6. thanks
1. A 7 kg lead sphere that has 35 °C temperature falls through the air. When the sphere is 15 m above the ground, its speed is 20 m/s. Suppose that when the sphere hits the ground, 75% of its kinetic energy converts to heat that raises its temperature. Specific heat capacity of lead c = 128 J/kg.°C, g=9.8 m/s. A. Setup with a labeled diagram. b. Write down in symbols the energy equation. c....
Answer 25-28
025 10.0 points A steel ball bearing is 4 cm in diameter at 20°C. A bronze plate has a hole that is 3.996 cm in diameter at 20°C. What common temperature must they have in order for the ball to just squeeze through the hole? Answer in units of C. 026 10.0 points A square hole 5.9 cm along each side is cut in a sheet of copper. Find the change in the area of this hole if...
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