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A wheel is rorating in angular speed of 800 r.m on a shaft, whose moment of inertia is negligible. A second wheel initially at rest with twice moment of inertia of the first shaft is coupled to the same shaft.
(a) What is the angular velocity of the combined shaft and two wheels
(b) What is the change in rotational kinetic energy experienced by the system
A solid conducting sphere of radius 20.00cm has a charge of 2.00ųC. If the potential is zero at infinity, find the value of the potential at the following distances from the center of the sphere:
a. 5.00cm b. 10.00cm c. 15.00cm
Assume that you want to hold two spherical objects together with an electrostatic force having magnitude of 2.0 × 10^6 N, and they are separated by 1.0 m. If each sphere holds equal charge, how much should each have?
The mineral chalk, which is made up of CaCO3 can be prepared by the reaction of solutions of CaCl2 and Na2CO3
a. Write the balance chemical equation
b. What volume of 0.500 M CaCl2 and 0.250 M Na2CO3 must be mixed to precipitate 8.51 g of CaCO3 ?
Determine the displacement vector that must be added to the displacement(25i - 16j) metre to give a displacement of 7.0 metres pointing in the x+ direction
a sample of carbon dioxide occupies a volume of 3500 mL at 125 Kpa pressure. What pressure would the gas exert if the volume was decreased to 2.00 liters?
What mass of NH3(g) is produced when 2.15 L of H2(g) measured at STP reacts?
What volume of Cl2(g) measured as STP is produced when 7.65 g of HCl(aq) reacts?
How many moles of carbon are in 2.5g of ethanol?
Victor has an array of size n.He loves to play with these n numbers.each time he plays with them ,he picks up any two consecutive numbers and adds them. on adding both numbers, it costs him K*(sum of both numbers).
Find the minimum cost of adding all the numbers in the array.
i/p1:size of array
i/p2:elements of array
i/p3:value of K
o/p:return the maximum cost of adding all the numbers of the array.
Ex1:
i/p1:3
i/p2:{1,2,3}
i/p3:2
o/p:18
#339914 on Dec 2023