Submit Question 49 of 50 A ball has a kinetic energy of 4.50KJ. If the ball...
Question 41 of 50 Submit Using the provided table, determine the enthalpy for the reaction 2 K(s)+2 H20() H2(g) 2 KOH (aq) AHi (kJ/mol) Substance K (s) 0 НаО () -285.8 КОН (ag) -482.4 kJ/mol 1 2 3 4 5 6 С 8 +- 0 x 100 O 7
A 1 kg ball bounces off the ground as shown: 45° The ball's kinetic energy immediately beforehand is 50 J. The coefficient of restitution for the collision is e = 1/V2. The ball's linear momentum in the r direction is conserved through the collision 1. How fast is the ball going right after it bounces? 2. How much energy is lost in the collision? 3, Assuming that g = 10 m/s2, how high will the ball bounce?
Submit Question 28 of 50 What is the final temperature of 150.1 g of water (specific heat =4.18 J/g C) at 24.2°C that absorbed 950. J of heat? C 1 2 3 4 5 6 C 8 +- 0 x 100 O 7
Ball 1, with a mass of 110 g and traveling at 10.0 m/s, collides head on with ball 2, which has a mass of 340 g and is initially at rest. Part A What are the final velocities of each ball if the collision is perfectly elastic? 10 A¢ * O O ? (Ucz), = m /s Submit Previous Answers Request Answer X Incorrect; Try Again; 7 attempts remaining Check your signs. Part B R O O ? IVO AQ...
i need help with these questions about physics. Elastic Collision Question 8 A 2 kg ball initially at rest rolls down a 30-degree inclined plane from a height of 4 meters (assume kinetic and rolling friction are negligible). A 2 kg box initially at rest slides down a 30-degree directionless inclined plane from a height of 4 meters. How do the velocities of the ball and the box compare when they both reach the bottom of their respective inclined planes?...
Submit Question 33 of 50 For the chemical reaction H2 (g)+ F2 (g) 2 HF (g) AH = -79.2 kJ/mol. What is the enthalpy for the reaction 3 H2 (g)+3 F2 (g) 6 HF (g) kJ/mol 1 2 3 4 5 6 C 8 +- 0 x 100 O 7
Submit Question 19 of 64 What is the energy of a photon with a frequency of 7.00 x 1014 s? (h 6.626 x 10-34 J s) J х 1 2 3 4 5 6 с 7 8 +- 0 x 100 Tap here or pull up for additional resources
A 0.3-kg ball has a velocity of 42 m/s. What is the kinetic energy of the ball? The kinetic energy of the ball is _____ J.
۱۲:۳۲ 2 4G liu. الملفات 4. An object of mass 2 kg has kinetic energy of 16 J, then the speed of the object is equal? d. 8m/s. a. 9m/s C. 18m/s. b. 10 m/s e. 4m/s 5.A ball is throw up from the ground level with a speed vi 30 m/s, its speed becomes zero at the highest point it reaches h. By the conservation law of energy, calculate the maximum height reached by a ball? a.90 m/s. b.45...
what is the kinetic energy of a ball with a mass of 5 kg rolling at 10 m/s