Answers edited by A08
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Question #e2c28
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Point T(3, −8) is reflected across the x-axis.
Which statements about T' are true?
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When calculating the mass of a Uranium-235 nucleus, can we just subtract the mass of the electrons from the given mass of a Uranium-235 atom?
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Question #da0c9
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Question #e4eae
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Question #ad131
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Question #d3574
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Question #82e26
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Should a circuit breaker be connected in parallel to the circuit it is protecting?
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A bulb of resistance R=16 ohms is attached in series with an infinite resistor network with identical resistances r ohms. A 10 V battery drives current in the circuit. What should be the value of 'r' such that the bulb dissipates about 1 W of power?
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Question #c598f
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Question #053aa
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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 #6 kg# and speed of #5 m/s# collides with and compresses the spring until it stops moving. How much will the spring compress?
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Question #38f0d
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Question #79dda
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What is the force acting on the bullet during the collision? What is the acceleration of the bullet during the collision?
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When you stand on the observation deck of the Empire State Building in New York, is your linear speed due to the Earth's rotation greater than, less than, or the same as when you were on the ground floor?
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Is Astrology a science?
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The wavelength of a travelling wave is 4m at a frequency of 10hertz. what time later will there be another crest at x=3m?
ii) if the amplitude of the wave is 12m, write the equation of the wave?
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If an object begins at the origin, will its displacement from the origin be the same as its position?
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Why don't we get color or detail information from our peripheral vision?
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The mass of each car is 600kg, 970kg, 230kg, 810kg, 660kg. The force of friction on each car is 1980N, 3201N, 759N, 2673N, 2178N respectively. What is the magnitude of the upward forces on the 5th car?
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Using the identity #cos(A+B) = cosAcosB - sinAsinB#, how do you prove that #1/4cos(3A) = cos^3A - 3/4cosA#?
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Question #7a65a
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Question #623a6
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Question #754ff
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Question #8abe9
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Question #82804
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Your teacher made 8 triangles he need help to identify what type triangles they are. Help him?:
1) #12, 16, 20#
2) #15, 17, 22#
3) #6, 16, 26#
4) #12, 12, 15#
5) #5,12,13#
6) #7,24,25#
7) #8,15,17#
8) #9,40,41#
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How to find x(t) and y(t)?
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Question #4fa4f
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A circular curve of highway is designed for traffic moving at 92 km/h. When assumed the traffic consists of cars without negative lift ?
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Question #20f5c
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Here are the numbers of pages in the books on a reading list.
71 96 110 112 114 114 121 127 135 175 180
Which data values are outliers?
Choose all answers that are correct.
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Question #c8d58
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Question related pressure. From AS LEVEL Physics. What will be the answer?
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Question #1e3b6
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In nuclear physics, what is meant by the term 'mass defect', and what is its relation to nuclear energy?
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A ball with a mass of #480 g# is projected vertically by a spring loaded contraption. The spring in the contraption has a spring constant of #18 (kg)/s^2# and was compressed by #6/5 m# when the ball was released. How high will the ball go?
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How does the graph of displacement vs time look for something moving at a constant, positive velocity?
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Question #a28ee
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Question #27796
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How do you solve #tan(x+pi)+cos(x+pi/2)=0#?
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#f(x) = 2x^4-3x^3-5x^2+9x-3#
Given that #sqrt(3)# forms two of the roots, find all the roots of the polynomial?
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How much of the total energy that leaves the sun makes it to earth? Why?
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I thought answer is C but it is A. Why is that so? And what does opposite side mean?
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The position of an object moving along a line is given by #p(t) = t - tsin(( pi )/3t) #. What is the speed of the object at #t = 3 #?
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A circular loop of radius a , carrying a current I ,is placed in a 2D magnetic field. The centre of the loop coincides with the centre of the field. The strength of magnetic field at the periphery of loop is B. Find the magnetic force on the wire?
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A rectangular tank is filled to the brim with water. When a hole at its bottom is unplugged, the tank is emptied in time T. How long will it take to empty the tank if it is half filled?
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Question #c91de
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How do you evaluate #\frac { x ^ { 2} + 12x + 35} { x + 5}#?
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Question #b34c2
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Effort supported by a rope-bridge ?
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Question #c5d00
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A solid cylinder rolls down an inclined plane of height 3 m and reaches the bottom of plane with angular velocity of 2√2 rad/s. The radius of the cylinder must be ?
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A boat traveled 336 miles downstream and back. The trip downstream took 12 hours. The trip back took 14 hours. What is the speed of the boat in still water? What is the speed of the current?
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How do you find the value of the discriminant and determine the nature of the roots #x^2 + 9 = 6x#?
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How do you simplify #-9^(1/2)#?
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Determine the molecular formula of a hydrocarbon if the combustion of 5.3 mg obtained 16.6 mg #"CO"_2#. The density of the gas at standard conditions is #"2.504 g/dm"^3#. What is the molar mass of the gas and its molecular and empirical formula?
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Question #84d11
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Question #3eb85
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How do you determine the height for Part B of this question?
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Question #e1d2a
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Question #1e3b6
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A boat traveled 210 miles downstream and back. The trip downstream took 10 hours. The trip back took 70 hours. What is the speed of the the boat in still water? What is the speed of the current?
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Question #3419a
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Question #8f27f
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Question #958e1
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What is the meaning and explanation of each equation? ( wave function, probability density, radial distribution function)
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How will you show that the velocity of matter wave is always greater than that of light?
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Question #8544f
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What is the volume of the solid produced by revolving #f(x)=sinx, x in [0,pi] #around the x-axis?
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Question #899fb
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Triangle A has sides of lengths #60 #, #42 #, and #60 #. Triangle B is similar to triangle A and has a side of length #7 #. What are the possible lengths of the other two sides of triangle B?
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A rocket fired into the air is modeled by the function #h(t)=-16t^2 + 160t#. How many seconds is the rocket in the air?
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Question #e8dd9
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Question #dfc68
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Question #73ff4
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Question #8c23f
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