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Rabbit runs in a straight line with a velocity of +1.4 m/s for a period of time, rests for 11 s, and then runs again along the same line at +0.64 m/s for an unknown amount of time. The rabbit trave
What is the smallest radius r that results in an intensity minimum at the detector? State your answer in terms of the given variables using vs for the speed of sound and π if necessary.
Lightning occurs when there is a flow of electric charge (principally electrons) between the ground and a thundercloud. How much charge flows between the ground and the cloud in this time?
Describe the events that take place to ensure that both the leading and lagging strand DNA synthesis occur with high accuracy (~1 mistake per million base pairs) and at the same rate by a single repli
An electric force of 4.0 N exists between two objects separated from each other by a distance of r. If the distance is decreased to 0.50r, calculate the magnitude of the force between the two objec
A -5.00nC point charge is on the axis at x= 1.20 m . A second point charge Q is on the x axis at -0.600m. What must be the sign and magnitude of Q for the resultant electric field at the origin to be
Write a paragraph about the result of the test of carbohydrates and lipids for benedict's test, lugol's test, uncoated paper test, sudan IV test, and Biuret test
A 4.00-kg model rocket is launched, expelling 54.0 g of burned fuel from its exhaust at a speed of 690 m/s. What is the velocity of the rocket after the fuel has burned? Hint: Ignore the external f
When we say that something gives us "energy," what does that mean? What is a biological definition of energy?
During a violent thunderstorm, hail the size of marbles (diameter = 1.6 cm) falls at a speed of 36 m/s. There are estimated to be 50 hailstones per cubic meter of air. Assume that, as for ice, 1 cm3
A proton is moving in the uniform electric field of part A. At point A, the velocity of the proton is 1.87×10^4 m/s, again pointed towards the east. What is the speed of the proton at point B?
A strictly aerobically respiring bacterium catabolizes glucose to co2. If a single cell of this organism has utilized 4 glucose molecules in this manner, how much net ATP has that cell produced by sub
The rocket fires for 10 mins , after which the asteroid is moving at 28 degrees to its original path at a speed of 20 km/h/. Find its average acceleration.
What Are the three types of work that a cell undergoes ?
Suppose you performed a gram stain on a sample from a pure culture of bacteria and observed a field of red and purple cocci. Adjacent cell were not always the same color. What do you conclude?
A young child grows rapidly, with high levels of cell division and high energy requirements.
Joe has a ring weighing 13 grams made of an alloy of 16 silver and the rest gold. He decides to melt down the rings and add enough silver to reduce the gold content to 69 . How many grams of silver
The force she exerts is 35 N at an angle of 55° above the horizontal. Find the coefficient of kinetic friciton between the flight bag and the floor.
What strategies do other organisms have that allow them to live in environments that are hypertonic to their cytoplasm?
Released from rest at the same height, a can of frozen juice rolls to the bottom of the same hill. What is the translational speed of the frozen juice can when it reaches the bottom?
A bucket is made from thin sheet metal. The bottom and top of the bucket have radii of 21.0 cm and 39.0 cm, respectively. The bucket is 30.0 cm high and filled with water. Where is the center of gr
What properties allow phospholipids to form membrane bilayers? Why can't a fatty acid do this?
On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 kg/m^3 , length 90.3 cm and diameter 2.55 cm from a storage room to a machinist. Calculate the weight of the rod, w
What happened when f2 pea plants are allowed to self breed
Segmentation moves chyme in only one direction