09/03/23

A tennis ball of mass 57g travels with velocity (56, 0, 0) m/s towards a wall.
A tennis ball of mass 57g travels with velocity (56, 0, 0) m/s towards a wall. after bouncing off the wall the tennis ball is observed to be traveling with velocity (-51, 0, 0)m/s57g = .057 kg56 *... more
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09/03/23

wo charges q1 = −3.20 nC and q2 = +8.16 nC are at a distance of 1.47 µm from each other. q1 is fixed at its location while q2 is released from rest.

(a) What is the kinetic energy of the charge q2 when it is 0.340 µm from q1? in joules(b) The charge q2 has a mass m2 = 7.85 µg. What is its speed when it is 0.340 µm from q1? in m/s
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09/02/23

basic integrals
During 21 weeks at the height of an influenza​ outbreak, the rate at which the number of cases of infection changed could be approximated by I′(t)=−6.34t+142.3​, where I is the total number of... more
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08/31/23

Use this information to write a rate law for this reaction, and calculate the value of the rate constant k.
Some measurements of the initial rate of a certain reaction are given in the table below. [N2] [H2] initial rate of reaction 1.87 M 1.78 M 25.0 M/s 1.87 M 0.403 M 1.28 M/s 3.98 M 1.78 M 113.... more
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08/31/23

Complete balancing the equation for the oxidation of toluene with potassium permanganate in an acidic medium.
Complete balancing the equation for the oxidation of toluene with potassium permanganate in an acidic medium.(Notes: Use the half-cell method to balance the redox equation. The potassium ion is a... more
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08/28/23

limits to infinity
lim x-> infinity (4-2x^2)/(2e^x)lim x-> infinity (sqrt3x^6-x^3)/(7x^3+1)for this one I got DNE? i first factored the top to absolute value x^3(3x^3-1) all over 7x^3+1. then set two equations... more
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08/28/23

Question 2 Please Help not sure how to find the solution
A power company transmits current through a 210000V transmission line. This voltage is stepped down at an area substation to 35000V by a transformer that has 500 turns on the primary coil. How many... more
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08/28/23

How many minutes of the ride are spent higher than 54 meters above the ground?
 A Ferris wheel is boarding platform is 5 meters above the ground, has a diameter of 76 meters, and rotates once every 6 minutes.How many minutes of the ride are spent higher than 54 meters above... more
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08/28/23

Algebra 2, Revenue

A farmer bought a number of pigs for $145. However, 4 of them died before he could sell the rest at a profit of $3 per pig. his total profit. Was $55. How many pigs did he originally buy?
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08/27/23

Find the volume of the region bounded by y=e^-x, y=1, and x=3 about the line y=2
I mainly think I am setting up the integral wrong because of the line it is rotating about.
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08/27/23

Fractions word problem
Michael Wittry has been investing in his Roth IRA retirement account for 17 years. Four years ago, his account was worth $215,652. After losing 1/4  of its original value, it then gained 1/3  of... more
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08/25/23

PRE CALCULUS 12 GRADE
Write a polynomial with real coefficient having 5 degree and zeros (0, square root of 3, -i,)
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08/25/23

At time t=0 a particle starts moving along the x axis. If its kinetic energy increases uniformly with t, the net force acting on it must be
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08/25/23

Chapter 8 Question Help
A power company transmits current through a 210000V transmission line. This voltage is stepped down at an area substation to 35000V by a transformer that has 500 turns on the primary coil. How many... more
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08/19/23

VERY STUCK: Second-Order Decomposition Process Total Pressure after 1 hour
When acetaldehyde at a pressure of 364 mmHg is introduced into an evacuated 500. mL flask at 518°C, the half-life for the second-order decomposition process, CH3CHO → CH4 + CO, is 410. s. What will... more
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08/16/23

PRECALCULUS, 12 GRADE
Let F(x)= x^2-11, FIND THE AVERADE RATE OF CHANGE FROM a=-4 TO a=-4+h
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08/11/23

I don’t understand how to do this
A rotating light is located 14 feet from a wall. The light completes one rotation every 2 seconds. Find the rate at which the light projected onto the wall is moving along the wall when the light's... more
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08/11/23

Since I don't have graphing calculator.. how to find the answer of this?

A graphing calculator is recommended.Use Newton's method to find all solutions of the equation correct to eight decimal places. Start by looking at a graph to find initial approximations. (Enter... more
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08/10/23

Balance the Equation
MnO4- (aq) + Cl- (aq) --> Mn2+ (aq) + Cl2 (aq) (acidic solution)So far, I have managed to do the following:MnO4- --> Mn2+2MnO4- --> Mn2+2MnO4- --> Mn2+ + 4H2O2MnO4- + 8H+ --> Mn2+ +... more
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08/08/23

Perimeter and area
How to find the perimeter if we only have the width of 18 and we don’t have area
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08/08/23

Find the arclength of the curve with x=3t-1, y=4t+9 with 2<t<6
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08/07/23

Electrons in charge
You perform an electrochemical reaction in which 0.300 mol of Cu+ are reduced to solid CuHow many coulombs of charge are transferred?I calculate the columbs correctly 2.84x 10^4 CBut how would I... more
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08/03/23

Calculate length

Calculate the length of the following parameterized curve over the given interval. r(theta) = <sin(theta) - theta cos(theta), cos(theta) + theta sin(theta)> , 0 <= theta <= 5
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07/28/23

Write the function in terms of x.
Sounds are how we perceive pressure waves in the air. The note F-sharp, more than an octave below the note 'middle C', is a sound wave with an ordinary frequency* f=105.6 Hertz or cycles/sec. Model... more
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07/25/23

The position of a particle on the x-axis at time t, t > 0, is s(t) = ln(t) with t measured in seconds and s(t) measured in feet. What is the average velocity of the particle for 1 ≤ t ≤ e?
a. 1b.ec. e-1d. 1/e-1
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