01/21/23

how many natural numbers m are such that: 2202-=2022(modm)
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01/19/23

Repelling tape: point charges
Given a small (2cm by 1.2cm), charged piece of tape hanging from a string 40 cm long, how might I be able to estimate its charge? I have considered approaching this string system with an identical... more
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01/19/23

How to find distribution of charge in a conducting shell?
A very long, non-conducting cylinder of radius R1 has a uniform charge density of C1 uC/m3. It is surrounded by a solid, conducting, cylindrical shell with an inner radius of R1 and outer radius of... more
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01/19/23

physics homework help
A crate of mass 15kg is pulled by a massless rope up a 36.9 degree ramp. The rope passes over an ideal pulley and is attached to a hanging crate of mass 16.40kg. the crate moves 1.54m, starting... more
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01/10/23

Evaluate by interpreting it as the area of part of a familiar geometric figure.
lim n to infinity 1/ n ∑ n j = 1 √19 - 19(j/n)^2
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01/08/23

i dont understand how to solve this- A quantity is growing at a constant 3% yearly rate. Whats the growth after 15 years?
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12/21/22

Use mathematical induction to prove that an operation always leads to 1 or a loop
Hello! I have a question: Use mathematical induction to prove that the operation of summing the squares of the digits always leads either to 1 or the single loop (4, 16, 37, 58, 89, 145, 42, 20,... more
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12/20/22

Please, please, help with this question about centripetal motion! Thank you in advance.
An engineer is trying to determine the maximum speed at which a 800kg car can travel around a curve (picture a car travelling in a circular motion around a center point). The coefficient of... more
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12/18/22

Looking up the night sky, a satellite is found to be in a circular orbit around the Earth.
er the course of several nights, it is measured that the satellite has an orbital period of 0.7 days. The mass of the satellite is unknown.The Earth has a mass of 5.97*10^24 kg and a radius of... more
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12/18/22

Coulomb's Law question
A point charge Q1 = +6.0 nC is at the point (0.30 m, 0.00 m); a charge Q2 = -1.0 nC is at (0.00 m, 0.10 m), and a charge Q3 = +5.0 nC is at (0.00 m, 0.00 m). What are the magnitude and direction of... more
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12/14/22

java questions.
2. Which keyword is always a reference to the object in which it occurs?5. True or False?  It is good practice to declare instance variables public, for easy access, and to declare getters and... more
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12/12/22

A child, who has a mass of 41 kg, tries to swing from a 10.0 m long rope.
Its speed at the bottom of the swing is 5.0 m/s. The rope is only rated to handle 3000 N of tensile force. The maximum amount of force will be put on the rope at the bottom of the swing. What is... more
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12/12/22

Why do you use the chain rule when finding the derivative of a circles's area?
I know that the derivative of A=pi(r^2) is A'=2pi(r)(r'), as per the chain rule, but I don't know why A'=2pi(r) wouldn't work, as per power rule?
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12/12/22

CALCULATE WORK SOLVE IN PAPER CLEARLY
You are visiting your friend Fabio's house. You find that, as a joke, he filled his swimming pool with Kool-Aid, which dissolved perfectly into the water. However, now that you want to swim, you... more
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12/11/22

help please please
Two balls are drawn, without replacement, from a bag containing 11 red balls numbered 1−11 and 3 white balls numbered 12−14. (Enter your probabilities as fractions.)(a) What is the probability that... more
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12/10/22

PLease help on this question. Through explanation is appreciated
A 3000kg helicopter, tilted as shown, is flying horizontally (neither gaining nor losing altitude). The helicopter is experiencing a 1200N drag.How many forces are acting on the helicopter?Are all... more
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12/10/22

Please help give a thorough explanation so that I can understand these problems better. Thank You!
A 1300kg truck is pulling a 600kg trailer to the right by generating a 420N force. The truck is experiencing a 600N drag and the trailer experiences 340N drag. Neglect any friction impeding the... more
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12/09/22

A fair coin is tossed 10 times. Find the probability of satisfying the condition that that the coin does not land on tails twice in a row
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12/08/22

Combinatorics password problem

a 7-character password can have upper case letters, lower case letters, and numerical digits. How many passwords are possible if it must start with a number and end with a lowercase letter... more
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12/08/22

I am not sure how to solve this pre-calc question. Show all work please. (general solutions for answer)
tan (3x)cos(2x)=cos(2x)
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12/07/22

calculus question
Your rich uncle bequests to you a continuous, constant income stream of $6000 per year for the next 10 years. The terms of the bequest require that this income stream be paid continuously into a... more
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12/07/22

potential energy, momentum
A basketball player is running at 4.60 m/s directly toward the basket when he jumps into the air to dunk the ball. He maintains his horizontal velocity.What vertical velocity (in m/s) does he need... more
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12/07/22

Circular motion question
A 76-kg pilot at an airshow performs a loop de loop with his plane. At the bottom of the 52-m radius loop, the plane is moving at 48 m/s. Determine the net force acting upon the pilot.
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12/06/22

Hard calculus question
g(x) = f(x) . tanx+ kx, where k is a real numberf is differentiable for all xf(pi/4) = 4f'(pi/4) = -2For what values of x, if any, in the interval 0 < x < 2x will the derivative of g fail to... more
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12/06/22

Which of the following could give rise to the Doppler Effect?

Which of the following could give rise to the Doppler Effect?A. Either the source of sound and/or the listener is/are moving.B. Both the source of sound and the listener must be moving.C. The... more
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