In a circuit with a 40 kΩ resistor and an initially charged capacitor with C= 100 µF, how much time does it take for the capacitance to fall to 20% of it's initial value? a) 3.2 s b) 6.4 s c) 12.8 s d) none of the above Explain your answer and show workings
Problem 6. A circular conduit carries 400 cfs when the flow velocity is 10 ft/s at half-full. a. What is the necessary fall per mile using a Manning's n 0.020? Will the flow be subcritical or supercritical? b. Calculate the flow rate when critical depth occurs at half-full.
Cam data: 0 to 900 bottom dwell, 900 to 1800 rise for 60 mm with uniform velocity 1800 to 2700 top dwell 2700 to 3600 fall for 60 mm with SHM Minimum cam diameter 50 mm In-line roller follower, diameter 10 mm Draw the cam profile.
The height of the helicopter from the ground is given by h = 3.00 t^3. Here, the unit of h is m and the unit of t is s. After t = 2.00s, a small postal carriage is dropped from the helicopter. How long does it take for the postal mail to fall and reach the ground? solution is 7.96s...
Does gravitational acceleration remain constant even if there is initial velocity? (We conducted an experiment to get the acceleration of an object by dropping it. The first trial was in free fall condition while second trial was with initial velocity on the object. Our data showed that both trials had an acceleration near 9.8 m/s2)
Which population shows genetic drift? Wolves in an island population have redder fur than mainland wolves due to the genetic makeup of the first wolf colonizers. A chickadee population moves to an area that has more seed-bearing plants. A population of tansy begins to bloom later in fall as the climate changes.
3) The distribution for of GPAs for medical school applicants in 2017 were approximately Normal, with a mean of 3.56 and a standard deviation of 0.34. Suppose a medical school will only consider candidates with GPAs in the top 15% of the applicant pool. An applicant has a GPA of 3.71. Does the GPA fall in the top 15% of...
What if we wanted to change every item in the list somehow using a for loop? What does it mean for a type of sequence to be mutable? Immutable? For all the sequences we’ve looked at, what does each fall under? What is the index of an item? How would you describe the range of indices for items in a...
Suppose that every time a fund manager trades stock, transaction costs such as commissions and bid–ask spreads amount to 2.4% of the value of the trade. If the portfolio turnover rate is 50%, by how much is the total return of the portfolio reduced by trading costs? (Round your answer to 1 decimal place.) Fall in returns %
Place a 0.255 kg ball on top of a vertically oriented spring and compress it by 0.174 m. The spring constant is 1,606 N/m. How high above its starting point will the spring launch the ball? In other words, how high will the ball be launched before it starts to fall back toward the ground?