Answers created by Wricheek

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• N the given options, which of them have the Inductive effect of a -#NO_2#which operates in the given compound?
  
• How can you increase the gravitational potential energy (GPE) of an object?
  
• How can I prove an elastic collision?
  
• How do you convert the following phrases into math expressions, and then evaluate the expressions: 50% of 32?
  
• If #6sinA + 8cosA# = 10 , how to prove that #TanA = 3/4# ?
  
• What carbocation is most stable?
  
• How to complete this identity? (See picture). Thanks!
  
• Whose work is credited with being the beginning of modern atomic theory?
  
• How do you work out the total translational kinetic energy of N2 gas?
  
• A body is released from the top of an inclined plane of inclination theta. It reaches the bottom with velocity V. If keeping the length same the angle of the inclination is doubled what will be the velocity of the body and reaching the ground?
  
• Question #b9f9b
  
• An object travels North at #4 m/s# for #5 s# and then travels South at #9 m/s# for # 2 s#. What are the object's average speed and velocity?
  
• Madison ran 2.0 m west, 4.0 m east, and then 3.0 m west. What is the vector sum of her displacements?
  
• How are Newman projections drawn?
  
• How do you evaluate #(x^3 + 3x^2 + 16x+48) \div (x+3#)?
  
• Question #7c0ab
  
• Question #d7434
  
• If you increase the force on an object, how does this affect its acceleration?
  
• If a coin is dropped from a height of 80 m, how fast will it be travelling when it hits the ground? What assumptions, if any, do you need to make?
  
• Question #932de
  
• Question #64679
  
• Question #63e2c
  
• A box with an initial speed of #7 m/s# is moving up a ramp. The ramp has a kinetic friction coefficient of #3/2 # and an incline of #(2 pi )/3 #. How far along the ramp will the box go?
  
• Question #7029d
  
• A gas at constant volume has 25 J of heat added to it. What is the work done by the gas?
  
• Question #578ec
  
• How can you differentiate between metals and nonmetals on the periodic table?
  
• How many unpaired electrons are in an O atom?
  
• How do you find the domain of #f(x)=.5x-1/3#?
  
• What is the domain and range of #y= ln(6-x) +2#?
  
• What is is the pH of salt?
  
• What is the method for finding solutions to problems?
  
• #int sqrt((a+x)/(a-x))dx#?
  
• How do you differentiate #y = (ln x)^ln x#?
  
• Question #a91f1
  
• If a rocket with a mass of #700 kg# vertically accelerates at a rate of # 3/2 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 4 seconds?
  
• Question #70056
  
• A hockey puck is hit on a frozen lake and moving with a speed of #13.7# #m##/s#. Seven seconds later, its speed is #7.2# #m##/s#. What is its average acceleration?
  
• A ball with a mass of #4 kg# moving at #9 m/s# hits a still ball with a mass of #18 kg#. If the first ball stops moving, how fast is the second ball moving? How much heat energy was lost in the collision?
  
• Question #bfd7d
  
• With an average acceleration of #-1.2# #m##/##s^2#, how long will it take a cyclist to bring a bicycle with an initial speed of #6.5# #m##/##s# to a complete stop?
  
• Question #696c9
  
• If the length of a #22 cm# spring increases to #95 cm# when a #7 kg# weight is hanging from it, what is the spring's constant?
  
• Suppose a treadmill has an average acceleration of #4.7 * 10^-3# #m##/##s^2#. How much does its speed change after #5.0# min? If the treadmill's initial speed is #1.7# #m##/##s#, what will its final speed be?
  
• A wave has a velocity of 300 m/s and a wavelength of 3 m, what is the frequency of the wave?
  
• Question #3474d
  
• What is the momentum of a truck with a mass of 4,500 kg traveling at 25 m/s?
  
• A 1,600 kg car is traveling at a speed of 12.5 m/s. What is the kinetic energy of the car?
  
• What percent of 125 is 60?
  
• How do you calculate the potential 10-kg sack of groceries on a shelf 1 m above the floor?
  
• What is the distance from crest to crest, or from trough to trough, called?
  
• If you are driving 95 km/h along a straight road and you look to the side for 2.0 s, how far do you travel during this inattentive period?
  
• What is the average speed of an object that is moving at #9 m/s# at #t=0# and accelerates at a rate of #a(t) =5-2t# on #t in [0,5]#?
  
• The formula for the chemical compound magnesium sulphate is #"MgSO"_4#. How do you calculate the relative formula mass (M) of this compound?
  
• Question #9b959
  
• A charge of #30 C# passes through a circuit every #5 s#. If the circuit can generate #27 W# of power, what is the circuit's resistance?
  
• A charge of #24 C# passes through a circuit every #16 s#. If the circuit can generate #32 W# of power, what is the circuit's resistance?
  
• A charge of #40 C# passes through a circuit every #5 s#. If the circuit can generate #40 W# of power, what is the circuit's resistance?
  
• How do you balance this equation? #Fe(NO_3)_3 + KSCN -> Fe(NO_3)_3 + KSCN#
  
• What is the velocity of a car that traveled a total of 100 kilometers north in 2 hours?
  
• Question #d9e51
  
• A ball with a mass of #280 g# is projected vertically by a spring loaded contraption. The spring in the contraption has a spring constant of #12 (kg)/s^2# and was compressed by #7/3 m# when the ball was released. How high will the ball go?
  
• A spring with a constant of #4 (kg)/(s^2)# is lying on the ground with one end attached to a wall. An object with a mass of #4 kg # and speed of # 8 m/s# collides with and compresses the spring until it stops moving. How much will the spring compress?
  
• Why are passengers thrown outward when d vehicle in which they r travelling takes a sudden turn around a circular road???
  
• Why are gravitational, electromagnetic, and nuclear forces often called fundamental or basic forces?
  
• If a projectile is shot at an angle of #pi/4# and at a velocity of #2 m/s#, when will it reach its maximum height??
  
• Question #25778
  
• What are some things that travel in waves?
  
• If a #5 kg# object is being constantly accelerated from #0m/s# to #12 m/s# over # 6s#, how much power is being applied at #t= 1 #?
  
• If a spring has a constant of #4 (kg)/s^2#, how much work will it take to extend the spring by #4 cm#?
  
• If an object with a mass of #12 kg # changes speed from #3 m/s# to #2 m/s#, by how much does its kinetic energy change?
  
• An object with a mass of #7 kg# is hanging from a spring with a constant of #2 (kg)/s^2#. If the spring is stretched by # 8 m#, what is the net force on the object?