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Questions (58)

An object is 30.0 cm to the left of a convex lens with a focal length of +8.0 cm. Calculate the distance from the lens. Would it
1. 1 answer
2. 1,004 views
Consider the system below.{4x-2y=-12} {3x-y=-3} Solve the system by using a matrix equation.
1. 4 answers
2. 760 views
Consider the function f(x) = x4 – 3x3 – 7x2 + 15x + 18.Use synthetic division to divide f(x) by x – 3. Use the answer to
1. 2 answers
2. 1,499 views
Okay last question I need help withMonochromatic light of 605 nm falls on a single slit, which is located 85 cm from a screen.
1. 3 answers
2. 2,990 views
A singer moves a note up one octave. How has the sound changed?The amplitude has decreased The wavelength has increased The
1. 1 answer
2. 1,100 views
A forklift exerts an upward force of 2.00*10^3 N on a box as it moves the box 5.00 m higher. How much work does the forklift do?
1. 1 answer
2. 1,224 views
How would i solve this?A 10.0 kg ball falling at 10.0 m/s hits a pile of feathers and comes to a complete stop in 10 s. What
1. 5 answers
2. 1,620 views
Bernardo divided one polynomial by another, as shown below.(9x2-9x-10)/(3x+2) What is the quotient? A. 3x-1 + -8/3x+2 B. 3x-1 +
1. 1 answer
2. 527 views
Help pleaseHow do the dark lines of an atom's absorption spectrum relate to the bright lines of its emission spectrum? A. The
1. 1 answer
2. 711 views
Am i Correct?2.0 cm*.044T*/.10 s= 0.88 V Each side of a square loop of wire measures 2.0 cm. A magnetic field of 0.044 T
1. 1 answer
2. 1,249 views
I'm not really sure on this one...Am i correct? A maglev train requires which of the following? A. track and the train must have
1. 2 answers
2. 776 views
Am i correct?My work 0.10/0.20= .5 = 1/2 or is it the other way around? .20/.10? Suppose a magnetic field of 0.20 T is applied
1. 1 answer
2. 491 views
Am i correct?A plane intersects only one nappe of a double-napped cone. It is neither perpendicular to the cone's axis nor
1. 2 answers
2. 1,243 views
with this one i'm confused i'm not sure if it's b or dThe current in a solenoid is changed from 1.1 A to 4.4 A. By what factor
1. 0 answers
2. 542 views
Help pleaseA wire carries a current of 5.2 A from east to west through a 6.0 m section of wire in the earth's magnetic field of
1. 1 answer
2. 1,245 views
Help pleaseThe center of a circle is at (-5 , 1) and it has a radius of 9. What is the equation of the circle?
1. 5 answers
2. 516 views
Help me with this pleaseA 6.0 m section of wire carries a current of 5.2 A from east to west in the earth's magnetic field of
1. 2 answers
2. 1,085 views
Which of the following is an appropriate measure of electric power on a toaster label?A. 110 V B. 2.0 A C. 220 W D. 55 Ω
1. 4 answers
2. 2,229 views
Am i correct?If a 10.0 kW device pulls 20.0 A of current, what voltage exists across it? A. 5.0 *10^0 V B. 5.0 *10^1 V C. 5.0
1. 4 answers
2. 2,091 views
What is the equivalent resistance of a parallel circuit with a 5.0 kΩ resistor, a 2.5 kΩ resistor, and 10.0 kΩ resistor?A.
1. 3 answers
2. 3,770 views
One 10.0 Ω resistor is wired in series with 10.0 Ω resistors in parallel. A 45.0 V battery supplies power to the circuit. What
1. 5 answers
2. 1,790 views
Help me with this pleaseA 10.0 Ω resistor is in parallel with a 20.0 Ω resistor and supplied by a 9.00 V battery. What is the
1. 5 answers
2. 1,629 views
am i correct?An electric oven has a resistance of 10.0Ω and a voltage of 220 V. How much current does it draw? A. 2.2 A B. 22 A
1. 3 answers
2. 1,418 views
Help me with this question, pleaseHow will the total voltage of a string of light bulbs in series change as you add more bulbs
1. 3 answers
2. 720 views
A 15.0 kΩ resistor is hooked up to a 45.0 V battery in a circuit with a switch.a.) What is the current flowing through the
1. 2 answers
2. 1,227 views
A 10.0 Ω resistor is hooked up in series with an 8.0 Ω resistor followed by a 27.0 Ω resistor. The circuit is powered by a
1. 1 answer
2. 1,728 views
what is AB?A= 3 , 5 B = 4 2 , 8 -7 this is a matrix, but it wont let me put in the brackets
1. 4 answers
2. 436 views
A 10.0 Ω resistor is in parallel with a 20.0 Ω resistor and supplied by a 9.0 V battery. What is the current passing through
1. 4 answers
2. 1,388 views
I'm confused with this one, here's what i got45.0 v/ 40.0Ω = 1.125 A is the answer b? A 10.0 Ω resistor is in parallel with a
1. 4 answers
2. 440 views
Help me with this pleaseWhen a 20 V battery is hooked up to a 10 Ω resistor in a circuit, how much current flows through the
1. 3 answers
2. 2,274 views
Am i correct?Which of the following is a reasonable power rating on an electric oven? 220 V 8.0 A <-- this one seems reasonable
1. 3 answers
2. 908 views
am i correct?A stream of moving charges results in a current of 5.6 A. How long does 116 C of charge take to flow past a fixed
1. 3 answers
2. 741 views
Help neededWhich of the following is equivalent to one ampere? 10 s/10 C 10 C/10 m 1.5 C/1.5 s 15 C/10 s
1. 3 answers
2. 575 views
Please help me go through thisF = q1q2/r^2, i know this is the equation, but i don't know how to get the answer, please help.
1. 3 answers
2. 879 views
Help me pleaseThe table shows the distance and costs of flights for a given airline with the same starting destination and
1. 0 answers
2. 669 views
What was the role of the northwest ordinance and what was its effect on the banning of slavery?
1. 1 answer
2. 582 views
How would i do this?Use the binomial theorem to expand (2x – 5y)^3
1. 2 answers
2. 1,321 views
Help me with this pleaseThere are 12 red checkers and 3 black checkers in a bag. Checkers are selected one at a time, with
1. 1 answer
2. 536 views
am i correct?1(2x)^3 + 3(2x)^2*(-5y)^1 + 3(2x)^1*(-5y)^2 + 1(-5y)^3 answer (2x-5y)^3
1. 3 answers
2. 370 views
help pleaseThere are 12 red checkers and 3 black checkers in a bag. Checkers are selected one at a time, with replacement. Each
1. 2 answers
2. 590 views
Please help me out with thisThe numbers 1 through 50 are written with red marker on slips of paper while the numbers 51 through
1. 2 answers
2. 970 views
Help me with this question pleaseThere are 12 red checkers and 3 black checkers in a bag. Checkers are selected one at a time,
1. 4 answers
2. 1,601 views
Last question i'm stuck on please help me through this.Five waves pass a dock in 2.0 s. If the waves are traveling at 10.0 m/s,
1. 4 answers
2. 1,386 views
Help me please I'm stuck on this question2.In a thunderstorm at 20.0°C, Karen sees a bolt of lightning and hears the
1. 2 answers
2. 2,395 views
Help me with this, please...A ball is dropped vertically from a height of 80 meters. After each bounce, the ball reaches a
1. 3 answers
2. 745 views
Help me understand this pleaseYou have a 2.00 kg block of lead. Lead melts at 327.5°C. CPb = 130.0 , and Hf for lead is 2.04
1. 0 answers
2. 780 views
Help pleaseA 200.0 g copper block absorbs 2.34 × 10^3 J of heat to raise its temperature by 30.0 K. What is the specific heat
1. 2 answers
2. 889 views
I don't understand this question...What is the change in entropy for a system that has 250 J of heat added to it at 25°C?
1. 0 answers
2. 570 views
How much heat is required to completely boil away 0.200 kg of water (Hv = 2.26 × 10^3 kJ/kg)?(Points : 1) 4.52 × 102 kJ 2.26
1. 4 answers
2. 2,168 views
Help please, I don't understand how to do this...Give an example of an arithmetic sequence that is found in the real world. Find
1. 4 answers
2. 1,991 views
How would i solve this?(30)(Cm)Δ+(335.5)(4.18)Δ(21)=0
1. 0 answers
2. 381 views
(30)(Cm)Δ+(335.5)(4.18)Δ(21)=0I need to find the specific heat of the masses, but i don't know how to, i'm currently doing a
1. 0 answers
2. 465 views
I need help with my lab, it's telling me to measure the mass of cup 1, but i don't understand how to measure it...I have a
1. 2 answers
2. 579 views
Can anyone please teach me how to divide polynomials using long division?It's quite confusing. Like give me a problem to solve
1. 2 answers
2. 763 views
It has a graph but i cant paste it on here, could you guide me through plzWhich is a root of f(x) = 0 with a multiplicity of 2?
1. 4 answers
2. 509 views
Am I correct?Which statement explains why a bicycle is stable when a rider pedals quickly? (Points : 1) The angular momentum
1. 4 answers
2. 1,010 views
Am I correct?Two carts have a compressed spring between them and are initially at rest. One of the carts has total mass,
1. 4 answers
2. 3,531 views
Guide me through this plz.A single 1,300 kg cargo train car is rolling along a train track at 2.0 m/s when 400 kg of coal is
1. 3 answers
2. 768 views