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1 3bnbspa 102 kg weight hangs from a pulley as shown below and an upward force on the rope represented by the red arrow
1 a 10 kg block at a height of 7 m above the ground slides down an incline to the ground assume there is no friction
explain how einsteins contribution to understanding the force between the earth and the moon differed from newtons
briefly state the law relating to the conservation of linear momentum and state two types of
monochromatic light wavelength 499 nm is incident perpendicularly on a single slit width 048 mm a screen is placed
a 15kg block is initially at rest on a horizontal frictionless surface when a horizontal force along an xaxis is
starting from rest a disk rotates about its central axis with constant angular accelerationin 50 sit rotates 25 rad
1 what is the angular momentum of a 0240-kg ball rotating on the end of a thin string in a circle of radius 135 m at an
read the article on the new emv cards which will eventually replace magnetic strips on credit cards do you see any
a satellite is originally in an orbit of radius r but eventually because of friction descends to the earth hitting the
the gravitron is an amusement park ride in which riders stand against the inner wall of a large spinning steel cylinder
1 explain why the melting point and boiling point of alkali metals are low2why is the ionisation action of alkali
a 50 ml volume of hcl solution and 05 m concentration was added to a sample of 55 g of magnesia milk this solution was
if it requires 385 milliliters of 085 molar nitric acid to neutralize 200 milliliters of barium hydroxide solve for the
1 for a reversible reaction at equilibriumabi what is the relationship between the rate law of the forward reaction the
a solution of hydrochloric acid is mixed with a solution of calcium hydroxide predict the products of the reaction that
h2co3nbspand hco3-nbspare used to create a buffer solutionnbspwhen an acid is introduced into this buffer which
zinc metal is placed in a solution of nitric acid predict the products of the reaction that would take place and select
how many picomoles per microliter of single-stranded dna are in a 300 ugml sample with 1000 base
1 describe the reaction of a weak acid and a strong base in general what will the final ph be when the reaction between
a sample of gas occupies a volume of 640 ml as it expands it does 1456 j of work on its surroundings at a constant
the wavelength of an electron beam is measured to be 9000 nm what is the velocity of the electronsin the same beam the
1 name at least three atoms or ion has the same electron configuration as a phosphide ion2 name at least three atoms or
inside a calorimeter is 100 g of warer at 398 celcius a 10 g object at 50 celcius is placed inside of a calorimeter
answer the following questionsstate two industrial applications of hydrogenwritenbspthenbspbalanced equation for