A culture of the bacterium Salmonella enteritidis initially contains 50 cells. When introduced into a nutrient broth, the culture grows at a rate proportional to its size. After 1.5 hours the population has increased to 925. a) find an expression for the number of bacteria after t hours b) find the number of bacteria after 6 hours c) find the rate of growth in bacteria per hour after 6 hours d) after how many hours will the population reach 250,000?

Q: What is the induced current (in mA) in the loop of wire over this time?

A: From the faraday's law we know ,                          If magnetic field B and area A then ,     ...

Q: In vector problems, the direction may be calculated if both x and y components are given. True False

A: vector, in mathematics, a quantity that has both magnitude and direction but not position. Examples ...

Q: Problem 1 (i) Find the frequency of ripples on the ocean that have a wavelength of 5 cm and propagat...

A: For a wave, frequency and wavelength are related parameters. Frequency and amplitude is controlled a...

Q: The system in the figure is in equilibrium. A concrete block of mass 231 kg hangs from the end of th...

A:

Q: Forces of 10 and 20 pounds act on a point at an angle of 45 with respect to each other. Find the mag...

A:

Q: A certain pendulum clock that works perfectly on Earth (g=9.81m/s^2) is brought to the Moon (g=1.628...

A:

Q: The figure below shows two tiny charged spheres g1 = 7.46 µC and g2 = -4.69 µC separated by 52.88 cm...

A: There is force of attraction between the opposite nature of charges while repulsive force between th...

Q: ItI In amp braaker you ou a 10 room your lamps plugged in, When they ave have two turned the light i...

A: given that two turned on then light comes instantly. it means they are connected in series.

Q: 1. A 5 - μF capacitor is parallel with a 10- μF capacitor. Connected in series with this combination...

A:

Q: An electric field due to a positive charge is represented by the diagram below. Five points A, B, C,...

A: There will be 'no work' needed if the two points between which we move the charges have the same pot...

Q: what is the kinetic energy of a car of mass 1.00x103 kg moving at a speed of 17.5 m/s.

A:

Q: erford, Bohr, Planck, and Einstein all contributed models to help describe the atom and atomic prope...

A: option (D) the Bohr model was the first model to relate the wavelength and quantized energy emission...

Q: An astronaut on Planet Alpha throws a rock with an upward velocity of 15m/s. After 6seconds, the ast...

A: Given data:  Initial velocity (v0) = 15 m/s, upward  Flight time (T) = 6 s Required: Acceleration du...

Q: The figure shows an 7.6 kg stone at rest on a spring. The spring is compressed 9.6 cm by the stone. ...

A:

Q: A cyclist coasts up a 10.7° slope, traveling 22.0 m along the road to the top of the hill. If the cy...

A:

Q: a) Explain what direction the magnetic field created by the wire must point in order to deflect the ...

A: We have to find the magnitude of current.

Q: The Position of a particle as a funct given by x (t)=4+4t°szt. What it Velocity v? a) 4t+8€-2 b) 나t3...

A:

Q: Find the distance of a point from the earth's centre where the resultant gravitational field due to ...

A: GivenMass of earth ,me=6.4×1024 kgMass of moon ,mm=7.4×1022 kgDistance between earth and Moon ,r=4.0...

Q: For the circuits given below, find the total resistance and the total current. 5.0 2 2.0 2 7.0 2 30 ...

A:

Q: Imagine an airplane flying through the air. Use what you know about lift, drag, weight, and thrust t...

A: Part a) If lift becomes greater than weight, there will be a net force in the upward direction. So, ...

Q: Assume two identical hypothetical balls of pure electrons. These balls are separated by a distance o...

A: GivenDistance of seperation between ball ,r=5 mMass of each hypothetical balls of pure electrons ,m=...

Q: 3R QR A 100 watt bulb emits light in all directions. The distance R from the bulb is equal to 1.0 me...

A:

Q: 2) 50.0 kg box is on a 30.0° incline. A) What frictional force (static) is required to keep it from ...

A:

Q: 8.37 •• On a very muddy football field, a 110-kg linebacker tack- les an 85-kg halfback. Immediately...

A:

Q: A rubber ball (1 kg) falls from a height of 10 m and collides elastically with the floor.  What is t...

A:

Q: The velocity of a particle at any time t moving along an x-axis is given by the following equation: ...

A: The first order derivative of position is velocity whereas the second order derivative of position i...

Q: 1. What is the dielectric strength of air? A. 3x 10? V/m В. Зx10° V/m 2. A cloud is located 1.5 km a...

A:

Q: L k = 100 N/m ell e 1.0 kg X = -0.5 m x = 0.0 m x = 0.5 m A block of mass 1.0 kg on a horizontal sur...

A:

Q: 8.3 •• (a) Show that the kinetic energy K and the momentum magnitude p of a particle with mass m are...

A:

Q: The magnitude of fixed end moment developed at support A is kNm. 12 KN/m A -12 m-

A:

Q: A person of mass 86.5 kg is initially at rest on the edge of a large stationary platform of mass 190...

A:

Q: O Calculate the terminal velocity of a 10 um gold particle (p-15.6 g/cm) in water (p'=1.00 g/cm3; H=...

A:

Q: A stone is dropped from rest from the top of a tower that is 42 m high. From ground level, a second ...

A:

Q: When the radius and the mass of the rotating object are held constant, does increasing the centripet...

A:

Q: A luge and its rider, with a total mass of 68.0 kg, emerge from a downhill track onto a horizontal s...

A: Part d) The acceleration at which they slow a = 8.4 m/s2 The force required is F = ma F = 68×8.4 F =...

Q: In the diagram, q1, q2, and q3 are in a straight line. Each of these particles has a charge of -2.35...

A: Given value--- q1 = q2 = q3 = - 2.35 × 10-6 C. We have to find--- net force on q3 ?

Q: In a standing wave formed on a taut rope with its ends fixed, the distance between two consecutive n...

A:

Q: A ball is shot vertically into the air at a velocity of 58.9 m/s. Five sec later, another ball is sh...

A: Given-  Initial velocity of ball 1, u1 = 58.9m/s  Both balls  meet at height, h = 127.8 m  Motion ti...

Q: Determine the distance between nearest (110) planes in a simple cubic lattice with a lattice constan...

A: The lattice spacing for a given set of plane (hkl) is given by                       dhkl = ah2+k2+l...

Q: According to the theory of electricity, which of the following statements is not true about electric...

A: According to theory of electricity, following statements are not true. Some conductors do not allow ...

Q: A missile of mass 1.05 102 kg is fired from a plane of mass 5.20 103 kg initially moving at a speed ...

A: Given that:- Mass of missile=m=1.05×10^2 kg

Q: The uniform solid block in the figure has mass 27.6 kg and edge lengths a =0.971 m, b = 1.43 m, and ...

A:

Q: A guitarist increases the tension on a string, without changing other aspects of it, so the new fund...

A:

Q: You pay an electric company an average of 8.7497 dollars for one kW-h used. How much would it cost i...

A: Given: cost of 1KWh = 8.7497 dollars power of AC = 650 W runs 10 hours per day for 30 days  

Q: A scalar quantity specifies both the magnitude and unit. True False

A: A scalar quantity specifies both the magnitude and unit but it doesn't specify any direction. For ex...

Q: x(cm) x(cm) 20- 20- 10 WAA, 10 1(s) - r(s) -10 -20 -10- -20 Block A Block B wo blocks are connected ...

A: Simple harmonic motion are affected by the mass and force constant  F = -kx and F = ma  where,  k = ...

Q: The velocity of a particle at any time t moving along an x-axis is given by the following equation: ...

A:

Q: A microwave can produce an electromagnetic wave with a peak Electric field magnitude of 3x103 V/m. ...

A:

Q: Average force of the 400 N while it is in contact with the golf ball.if the impulse is 200 N x s the...

A:

Q: In the figure, two 9.90 kg blocks are connected by a massless string over a pulley of radius 2.50 cm...

A: