A bacterium moves with a speed of 2.6 µm/s across a petri dish with radius r = 7.3 cm. How long does it take the bacterium to traverse the petri dish along its diameter?
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A bacterium moves with a speed of 2.6 µm/s across a petri dish with radius r...
Find the terminal speed in µm/s of a bacteria (size 2 µm) falling in water. The drag force for a small object like a bacteria is given by Fdrag = Crv where C = 0.02 is the drag coefficient, r is the radius and v is the speed. Take the density of the bacterium to be 1100 kg/m3. (Assume the bacteria is spherical.) ________ µm/s
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Q5 Density 12 Points Scientists who are studying a new antibiotic have some bacteria in a petri dish. There is a dead region in the center of the dish (where the antibiotic has been applied) with a ring of bacteria around it. The inner boundary of the ring of bacteria is 1 cm from the center of the dish, and the bacteria extend from there to the outer edge of the dish. The...
7. A point P moves along the spiral rae20 with constant speed u. Show that the components of its velocity along and perpendicular to the radius vector are constant. Find in terms of u and r the magnitude of the resultant acceleration of P. Find the angle between this acceleration and the velocity of P
7. A point P moves along the spiral rae20 with constant speed u. Show that the components of its velocity along and perpendicular to the...
I got b wrong, not sure why :(
An electron moves in a circular path with a speed of 1.35 x 10 m/s in the presence of a uniform magnetic field with a magnitude of 2.16 mT. The electron's path is perpendicular to the field. (a) What is the radius (in cm) of the circular path? Cm (b) How long (in s) does it take the electron to complete one revolution? Consider the result for the radius, and how it...
A particle moves in a circle of radius 82 m with a constant speed of 24 m/s. 1) (a) What is its angular velocity in radians per second about the center of the circle? =.292 b.)(b) How many revolutions does it make in 30 s? = ?
A non-uniform cylinder with mass M and radius R rolls without sliding across the floor. If it's mass was 2 kg and its radius 32 cm, and it was rolling at an angular speed of 13 rad/sec, how far up a hill can the cylinder roll without slipping?
PROBLEMS and QUESTIONS 1. An object moves across the floor and comes to a stop. Explain how Aristotle and Galileo would view this motion differently. 2. Explain the difference between speed and velocity and give examples of each. 3. Explain how an object can have a constant speed and a varying velocity. 4. What are the units of acceleration? 5. If an automobile travels at the rate of 40 miles per hour, how long will it take to travel 400...
1. When a point on the edge of a DVD (radius 6.0 cm) moves along an arc of length 120 cm, through what multiple of π rad does the disk turn? 2. With an angular velocity of 3.4π rad/s, how much time is required to complete 11 complete revolutions? 3. The blades of a kitchen blender rotate counterclockwise at 2.2x10^4 rpm (revolutions per minute) a top speed. It takes the blender 2.1 seconds to reach this top speed after being...
A wheel of radius RA = 10 cm is coupled by a belt to a wheel of radius RB-25 cm, as shown. Wheel A increases its angular speed from rest at a constant rate of T/2 rad/s? How long does it take wheel B to reach a rotational speed of 150 rev/s, assuming the belt does not slip?
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The figure shows a long conducting cylinder (radius R-5.63 cm) charged with a uniform charge density of -2.7 nC/m. An electron moves in a circular path at a distance r-11.51 cm from the center of the cylinder. Find the speed of the electron, R а r electron ♡ Select one: O a. 6.93e6 m/s b. 1.23e6 m/s O c. 8.61e5 m/s O d. 7.01e6 m/s O e. 2.92e6 m/s