A 0.60 kg spike is hammered into a railroad
tie. The initial speed of the spike is equal to
1.8 m/s.
If the tie and spike together absorb 57.8
percent of the spike's initial kinetic energy
as internal energy, calculate the increase in
internal energy of the tie and spike.
Answer in units of J.
Solved
Show answers
More tips
- F Food and Cooking The Most Delicious and Simple Fish in Batter Recipe...
- D Dating, Love, Relationships How Long Can Love Last?...
- A Auto and Moto Mastering One-Movement Parking: All You Need to Know...
- C Computers and Internet How to Properly Order Clothing from International Online Stores...
- H Health and Medicine Headache: A Comprehensive Guide to Treatment...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- A Auto and Moto Discovering the Leader: What is the Most Expensive Car in the World?...
- F Food and Cooking How to Quickly Put your Child to Sleep?...
- C Computers and Internet How to Create a Website for Free and Easy?...
- F Family and Home Parquet or laminate, which is better?...
Answers on questions: Physics
- P Physics Given mass and force, one can caluclate acceleration a) true b) false...
- P Physics En una placa rectangular que mide 1 cm de ancho por 2 cm de largo, existe una densidad de flujo magnético de 1.5 T. ¿Cuál es el flujo magnético total a través de...
- P Physics 1. Salads are a great way to get lots of veggies in your daily diet. Traditional green salads are a bowl of chopped up lettuce with different kinds of fresh vegetables...
- P Physics An electromagnetic wave with frequency 65.0 hz travels in aninsulating magnetic material that has dielectric constant 3.64 andrelative permeability 5.18 at this...
- P Physics Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what...
- P Physics A cyclist accelerate from 5.0m/s [S] to 15 m/s [S] in 4.0s. What is his acceleration?...
- P Physics A box has two forces acting on it. One force is 100 N upward. Another force is 50 N downward. What is the net force on the box? Choose the correct answer. 50 N upward...
- P Physics An object moves with a constant acceleration of 5 m/s2. Which of the following statements is true? A. The object moves 5 m each second B. The object’s acceleration...
- P Physics A) 0.11 W B) 1.1 W C) 2.3 W D) 4.5 W...
- M Mathematics Bishwane purchased a second hand radio for Rs 1230. He spent Rs 170 to repair it and sold it at 4.% loss. For what price did he sell the radio?...
Ответ:
A 0.60 kg spike is hammered into a railroad tie. The initial speed of the spike is equal to 1.8 m/s. If the tie and spike together absorb 57.8 percent of the spike’s initial kinetic energy as internal energy, calculate the increase in internal energy of the tie and spike. Answer in units of J.
Change in internal energy of the tie and the spike is 0.56 Joules (J).
Explanation:
Given:
Mass of the spike, m = 0.60 kg
Its initial speed, u = 1.8 m/s
According to the question:
The tie and spike together absorb 57.8 percent of the spike’s initial kinetic energy as internal energy.
We have to find the increase in internal energy of the tie and spike.
So,
Let the change in internal energy = ΔE
And the kinetic energy is KE :
Then,
⇒![KE=\frac{mu^2}{2}](/tpl/images/0604/2610/1eaaa.png)
⇒![KE=\frac{0.60\times (1.8)^2}{2}](/tpl/images/0604/2610/28787.png)
⇒![KE=\frac{0.60\times 3.24}{2}](/tpl/images/0604/2610/9c8bb.png)
⇒![KE=\frac{1.944}{2}](/tpl/images/0604/2610/20163.png)
⇒
J
Now,
Change in internal energy:
⇒
...as 57.8 % = 0.578
⇒![\triangle E = 0.578\times 0.972](/tpl/images/0604/2610/674e3.png)
⇒
J
Change in internal energy of the tie and the spike is 0.56 Joules.
Ответ:
Explanation:
You should use this formula:Q=m×c×△θm=200gc=0.444△θ=100-22=78°CQ=200×0.444×78=6926.4J