Answers created by Morgan

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• #C = (\frac{1}{C_1} + \cdots + \frac{1}{C_n})^{-1} # and in parallel is # C = C_1 + \cdots + C_n# Capacitance?
  
• On an alien planet, a ball is thrown vertically upwards from the ground, rises to a height of 100 m, and then falls back to the ground. The total time is taken from when the ball was thrown upwards to when it reached the ground again, is 10 seconds.....?
  
• A projectile is shot at an angle of #pi/6 # and a velocity of # 48 m/s#. How far away will the projectile land?
  
• How fast will an object with a mass of #16 kg# accelerate if a force of #24 N# is constantly applied to it?
  
• How do quantum mechanics and general relativity conflict?
  
• What are Einstein’s “spooky actions”?
  
• Which curve is more steeper, isothermal or adiabatic? Explain please
  
• What is the magnitude of the force a 1.5 x 10^6 C charge exerts on a 3.2 x 10^4 C charge located 1.5 m away?
  
• Can momentum be negative?
  
• What does the #E# represent in Einstein's equation, #E=mc^2#?
  
• How fast will an object with a mass of #6 kg# accelerate if a force of #24 N# is constantly applied to it?
  
• What happens when a second bulb is added to a circuit,do the bulbs glow dimmer?
  
• Rate of decay is proportional to amount of substance remaining. M=Ce^(kt). Time is in days. Initially 125.3 grams of substance.after 3 days,98.1 grams remain. What is constant k?
  
• What is an example of a quantum mechanics practice problem?
  
• Question #31aef
  
• An object is falling freely from rest near the surface of the earth. It takes #2"s"# for the object to reach the ground #64"ft"# below. The acceleration of the object must be equal to #-g#: true or false?
  
• Let #T:P_2→P_1# be defined by #T(a+bx+cx^2)=b+2c+(a-b)x#. Check that #T# is a linear transformation. Find the matrix of the transformation with respect to the ordered bases #B_1={x^2,x^2+x,x^2+x+1}# and #B_2={1,x}#. Find the kernel of #T#.?
  
• Physics help ??
  
• Question #ae590
  
• How do you normalize #(2 i -3j -k)#?
  
• How do I prove these couple of sets? thanks
  
• What is correct for an ideal gas undergoing reversible adiabatic expansion regarding temperature –?
  
• What is moment generating function?
  
• Show that addition of vectors is commutative, i.e. A+B=B+A?
  
• How do you find the Limit of #x+3# as #x->2# and then use the epsilon delta definition to prove that the limit is L?
  
• How do you find the derivative of #y = 9 ln(4 ln x)#?
  
• Assume a binomial probability distribution with #n = 40# and #p = 0.55#. What is the standard deviation?
  
• Question #081c9
  
• Orbital Hybridization "Cheat Sheet"?
  
• Question #c8fa6
  
• In an isobaric process pressure is constant ;means piston is fixed ,so then how, work is done?
  
• What kinds of speeds can be found from a Maxwell-Boltzmann distribution?
  
• Question #54360
  
• A container with a volume of #18 L# contains a gas with a temperature of #150^o K#. If the temperature of the gas changes to #120 ^o K# without any change in pressure, what must the container's new volume be?
  
• A container with a volume of #16 L# contains a gas with a temperature of #320^o K#. If the temperature of the gas changes to #350 ^o K# without any change in pressure, what must the container's new volume be?
  
• If the force is double the acceletation will change by a factor of (assume the mass is constan)?
  
• The temperature of a fixed mass of an ideal gas goes from 40ºC to 80ºC at a constant volume. If the initial pressure was x, what is the new pressure?
  
• Calculate the mean-square speed, of krypton atoms in a sample of gas at a temperature of 22ºC?
  
• A flexible vessel contains 58.00 L of gas at a pressure of 2.55 atm. Under conditions of constant temperature and moles of gas, what is the volume of the gas when the pressure of the vessel is doubled?
  
• An object with a mass of #5 kg# is on a plane with an incline of # - pi/8 #. If it takes #8 N# to start pushing the object down the plane and #2 N# to keep pushing it, what are the coefficients of static and kinetic friction?
  
• Question #8a062
  
• What is the difference between discrete probability distribution and continuous probability distribution?
  
• Question #9d88c
  
• Question #82e58
  
• Question #74685
  
• Question #6756e
  
• Question #7d3d7
  
• What happens to the kinetic energy of an object if we halve the velocity?
  
• How do you evaluate the definite integral #int_0^(oo)x^3e^(-x)dx#?
  
• Question #08591
  
• What is the difference between Poisson Distribution and Exponential Distribution?
  
• Why is a Poisson distribution important?
  
• A student asserts that putting two current-carrying rods next to each other causes them to repel because they carry like charges. Is the student correct?
  
• What are some common mistakes students make with heat in thermodynamics?
  
• Question #3bd67
  
• If a pendulum is shortened, does its frequency increase or decrease?
  
• If current passes through a solenoid, will two consecutive loops move towards or away from each other and why?
  
• Question #a0b33
  
• In a string of 12 christmas lights, 3 are defective. Bulbs are selected at random, one at a time, until the third defective bulb is found. What is the probability that the third defective bulb is the third bulb tested?
  
• If a projectile is shot at a velocity of #12 m/s# and an angle of #pi/6#, how far will the projectile travel before landing?
  
• A box with an initial speed of #1 m/s# is moving up a ramp. The ramp has a kinetic friction coefficient of #2/3 # and an incline of #(5 pi )/12 #. How far along the ramp will the box go?
  
• Question #92f18
  
• Question #d8cc8
  
• What's the force on charge Q3?
  
• What force is needed to give a 0.25-kg arrow an acceleration of 196 m/s squared?
  
• Question #a8902
  
• Question #28c50
  
• A ball thrown vertically with a velocity of 30 m/s. What is the velocity at the top of its path?
  
• Question #6a327
  
• The work done by a force directed perpendicular to the displacement is zero. TRUE OR FALSE ?
  
• How do I remember which formulas to use when studying 1-D Kinematics?
  
• Question #a0487
  
• What is an example of a vertical motion with a positive velocity and a negative acceleration?
  
• Question #9ebc9
  
• Question #ecf38
  
• How do you prove that the limit of #x^2 = 9# as x approaches 3 using the epsilon delta proof?
  
• Is #sqrt(2)# a rational number?
  
• Does a constant speed indicate dynamic equilibrium?
  
• Question #7b05d
  
• How much displacement will a coil spring with a spring constant of 120 N/m achieve if it is stretched by a 60 N force?
  
• What is the work for the free expansion of a gas into vacuum?
  
• What is the idea of Thermal Expansion?
  
• Help please? Thank you ^^
  
• A single force of 40 N acts upon a 5-kg block. What is the magnitude of the acceleration of the block?
  
• In an adiobatic system, what's the relationship between heat and change in internal energy?
  
• A gas expands in volume from 35.6 mL to 70.6 mL at constant temperature. What is the work done (in joules) if the gas expands against a constant pressure of 3.2 atm?
  
• Question #06a40
  
• How would you calculate the work associated with the compression of a gas from 121.0 L to 80.0 L at a pressure of 13.1 atm?
  
• The gas is enclosed in a metal container with movable piston on top . heat is added to the system from bottom by placing a candle at the bottom which of the following is true ?
  
• The net force on an object of #14000"N"# causes it to accelerate at a rate of #5"m"//"s"^2#. What is the mass of the object?
  
• What are the two categories of friction?
  
• How do you normalize <2,0,-1>?
  
• A ball with a mass of #4 kg # and velocity of #6 m/s# collides with a second ball with a mass of #7 kg# and velocity of #- 2 m/s#. If #25%# of the kinetic energy is lost, what are the final velocities of the balls?
  
• Question #e4d20
  
• Phil pushes a box with a force of 800 n and moves the box a distance of 450 m. How much work did Phil do while moving this box?
  
• A ball with a mass of #720 g# is projected vertically by a spring loaded contraption. The spring in the contraption has a spring constant of #36 (kg)/s^2# and was compressed by #5/8 m# when the ball was released. How high will the ball go?
  
• An electric toy car with a mass of #4 kg# is powered by a motor with a voltage of #15 V# and a current supply of #3 A#. How long will it take for the toy car to accelerate from rest to #5 m/s#?
  
• Heather and Matthew walk with an average velocity of 0.98 m/s eastward. If it takes them 34 min to walk to the store, what is their displacement?
  
• Why frictional force is non conservative force?
  
• An electric toy car with a mass of #5 kg# is powered by a motor with a voltage of #4 V# and a current supply of #5 A#. How fast can the toy car accelerate from rest to #3 m/s#?
  
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