12/06/22

Which of the following describes the Mach number?
Which of the following describes the Mach number? vobject [(vobject)/(vsound)] [(vsound)/(vobject)] vsound
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12/05/22

Ferris wheel problem

A Ferris wheel has a radius of 33.6 feet. The bottom of the Ferris wheel sits 0.6 feet above the ground. You board the Ferris wheel at the 6 o'clock position and rotate counter-clockwise.1: Write a... more
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12/05/22

represent the 8-bit two's complement number 0xca as a 16-bit sign magnitude number
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12/05/22

I need help finding the force of friction please.

"A shopper pushes a 28N cart a distance of 53 m along a level grocery store surface. The force he exerts is 35 N at an angle of 42 below the horizontal. The coefficient of friction is .15. Find the... more
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12/05/22

Elastic Potential Energy
A .15 kg ball is compressing a vertical spring by .085 meters. The spring constant is 124n/m. What height will the ball reach?
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12/05/22

uppose f (x) has a local minimum at x = c and define g(x) = −f (x). Show that g(x) has a local maximum at x = c. (Hint: Use the definition of a local maximum.)
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12/01/22

if a 100g mass is on the 60cm mark, where would a 200g mass need to be placed to balance? Also the fulcrum is at the 50cm mark
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12/01/22

(c(t))2+(r(t))2=k, where k is a constant
(c(t))2+(r(t))2=k, where k is a constantprove that c(t)*c'(t)=-r(t)*r'(t)
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12/01/22

A hamster running in a wheel of radius 13 cm spins the wheel at 13 revolutions per minute.
a) What is the angular velocity of the wheel? (in radians/sec) b) At what linear velocity is the hamster running? (in cm/sec)  
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11/30/22

Write an equation for a rational function

Write an equation for a rational function with:Vertical asymptotes at x = 5 and x = -2x-intercepts at x = -1 and x = -5y-intercept at 4y = 
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11/30/22

vector field v=−4xi−4yj (a) find the system of differential equations associated with the vector field: x′= y′= (b) Solve the system you found above to find the flow x(t)= y(t)=

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11/28/22

Complete Binary Tree in Java (ArrayList implementation)
inOrder, postOrder, and preOrder seem to be printing extra numbers. Why is this happening? import java.util.*;public class CBT{  private ArrayList tree;  public CBT(){ tree = new... more
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11/28/22

What is the acceleration of each block m1 = 2 kg and m2 = 3 kg? (two pulley system problem)
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11/28/22

A planet has twice the mass of Earth. How much larger would the radius of the planet have to be for the gravitational field strength, at the planet's surface to be the same as on Earth's surface?
How to solve.
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11/27/22

Find the absolute maximum and absolute minimum of f(\theta )=1 + cos^(2)(\theta ) on the interval [(\pi )/(4,\pi )]
Find the absolute maximum and absolute minimum of f(\theta )=1 + cos^(2)(\theta ) on the interval [(\pi )/(4,\pi )]
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11/26/22

Evaluate the triple integral ∭ExdV where E is the solid bounded by the paraboloid x=2y2+2z2 and x=2.
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11/24/22

by what fraction would the diameter of the moon appear shortened to an observer in a rocketship travelling at a speed of 300km/sec with respect to the moon
by what fraction would the diameter of the moon appear shortened to an observer in a rocketship travelling at a speed of 300km/sec with respect to the moon
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11/23/22

engine efficiency
As a gasoline engine is running, an amount of gasoline containing 9,900 J of chemical potential energy is burned in 1 s. During that second, the engine does 3,300 J of work.(a)What is the engine's... more
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11/21/22

errors in related rates
You are wondering how inaccuracies in the radius or height of your can effect the volume of the can. Use differentials to answer the questions below. An error of p percent in the radius will cause... more
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11/21/22

I need help with this question
The gas tank in a sports car is a cylinder lying on its side. If the diameter of the tank is 0.42 m and if the tank is filled with gasoline to within 0.21 m of the top, find the force on one end of... more
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11/21/22

Related Rates of Change
A searchlight rotates at a rate of 4 revolutions per minute. The beam hits a wall located 14 miles away and produces a dot of light that moves horizontally along the wall. How fast (in miles per... more
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11/18/22

Prove NP-Completeness of a Problem (Complexity Theory)
INPUT: A boolean formula F in CNF and a positive integer k.OUTPUT: Decide if we can delete k clauses from F such that the resulting CNF is satisfiable.
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11/17/22

Woman sled question
A woman pulls a sled together with its load of mass m kg. Let g be acceleration due to gravity. If her arm makes an angle theta (vertical) with the ground and the co-efficient of friction (mu)... more
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11/15/22

Calculus Related Rates
A spotlight on the ground is shining on a wall 24m away. If a woman 2m tall walks from the spotlight toward the building at a speed of 0.8m/s, how fast is the length of her shadow on the building... more
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11/14/22

The electric motor of a model train accelerates the train from rest to 0.620 m/s in 21.0 ms. The total mass of the train is 875 g.

(a) Find the minimum power delivered to the train by electrical transmission from the metal rails during the acceleration. (b) Why is it the minimum power?
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