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Amanda applies a horizontal force of 180 N on a piece of rope causing the two blocks of mass 20 Kg and 40 Kg to accelerate. Friction on the blocks is negligible. Determine the tension force at X in
In a simple model of the hydrogen atom, the electron rotates in a circular orbit around the proton having a speed of 2.2 * 10^6 m/s. Find out the radius of the electron's orbit.
Compute the apparent thickness of the plate as viewed from above the water. (Suppose almost normal incidence of light rays.)
If houses are connected by the straight highway running east-west (no stoplight or towns in way) and are 350 miles apart. How far from johns house will they meet? At what time will they meet?
Compute the electric field (magnitude and direction) at the upper right corner of a square 1.22 on a side when the other three corners are occupied through 2.45 × 10-6 charges. Suppose that th
A lens consists of a focal length of f = +10.0cm. When an object is positioned 30.0 cm from the lens, where is the image formed? Is the image virtual or real?
Assume that a child that consists of a mass of 15 kg is walking from the center of the board in the direction of the right end. Determine how close to the right end of the board do you think this ch
A pendulum comprises of a stick of length L and mass M which is pivoted regarding one end, and joined to a spring of stiffness k a distance l from the pivot. (i) Determine the natural angular freque
Suppose that each runner maintains the constant speed throughout race, by how many feet second-place runner beats third-place runner?
Assume that you hold a box which weighs 0.890 kg with your arm extended to a distance of around 0.665 m from your shoulder joint, determine what torque do you think the box applies on that joint?
Determine the magnitude and direction of the total electrostatic force acting on the charge at the center? State the direction relative to due east (in the direction of right) (0°)
A yacht consists of its center of mass 2.60 m behind the front of the yacht. If the two people sit in the front seat of this yacht, 2.60 m from its front and three people sit in the back seat of the
Find number of ways are there to put three white rooks and five black rooks on chessboard, so none can attack each other?
If probability of it being sunny tomorrow is .8, and Robin hood has ten arrows in the quiver, determine probability he will have successful practice.
The bank charges 10% simple interest on the $300 loan. How much will have to be repaid if loan is paid back in the lump sum at end of three years?
Random sample of 20 values was selected from the population, and sample deviation was calculated to be 360. Based on the sample result estimate the 98% confidence interval evaluate for true populati
Determine the amount of the annuity if size of each payment is $250, payable at the end of quarter for 5 years at the interest rate of 16% compounded quarterly?
The simple random sample of 40 items resulted in the sample mean of 25. Population standard deviation is 5. Determine standard error of mean (to 2 decimals)?
The following distribution was gathered over the 1000 days for number of complaints for the local restaurant. Determine expected number of complaints for the restaurant.
Population standard deviation is 3.1 movies. Based on the .05 level of significance, can you conclude that sample is different from national average?
You make decision to take out the simple interest loan for $5000, at 7% yearly interest on date that unit 4 starts for you.
Now, Ima would like to know what annual amount he has to invest in aforementioned ERS's choice for next ten years, so that he can begin withdrawing $6000 a year at the end of each of the retirement
The area of the circle is the function of its radius, A = pi r^2. Draw two circles, one with radius r and second with radius r + delta r, where delta r is reasonably small. State delta A and dA sym
Find probability that voltage regulator fails during the ownership? If the regulator fails after you own automobile 3 years and it is replaced, find mean time until next failure?
Determine the expression for amount of material remaining at any time t. Amount of material after four hours. Time at which material has decayed to one half of original amount.