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3 years ago

Define sporulation and fragmentation

Physics

2 answers:

Andrei [34K]3 years ago

5 0

Answer:

Sporulation

the formations of spores from vegetative cells during unfavorable environmental conditions

Fragmentation

The asexual reproduction, where the body of the organism breaks into smaller pieces

AnnZ [28]3 years ago

3 0

Fragmentation: The breaking up of the body of organisms into two or more pieces or fragments on maturing, each of which subsequently can grow into a completely new organism is called fragmentation.

Definition of sporulation

: the formation of spores

sporulation refers to the formation of spores from vegetative cells during unfavorable environmental conditions. As such, it may be described as an adaptive response that allows the organism to survive given adverse conditions (radiation, extreme heat or cold, lack of nutrition etc).

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3. As an object’s temperature increases, the ____________________ at which it radiates energy increases.

Vladimir [108]

Answer:

As an object’s temperature increases, the Rate at which it radiates energy increases.

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3 years ago

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A 0.2-kg hockey puck is sliding along the ice with an initial speed of 12 m/s when a player strikes it with his stick, causing i

iVinArrow [24]

Answer:

The impulse the stick applies to the puck is 7 kg-m/s and it is in opposite direction

Explanation:

Given that,

Mass of the hockey puck, m = 0.2 kg

Initial speed of the hockey, u = 12 m/s

Final speed of the hockey, f = -23 m/s (as it reverse its direction)

We need to find the impulse the stick applies to the puck. It is given by the change in momentum of the object. It is given by :

$J=m(v-u)$

$J=0.2\ kg\times (-23-12)\ m/s$

J = -7 kg-m/s

So, the impulse the stick applies to the puck is 7 kg-m/s and it is in opposite direction. Hence, this is the required solution.

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4 years ago

A basketball player is 4.22 m from

max2010maxim [7]

Answer: The height above the release point is 2.96 meters.

Explanation:

The acceleration of the ball is the gravitational acceleration in the y axis.

A = (0, -9.8m/s^)

For the velocity we can integrate over time and get:

V(t) = (9.20m/s*cos(69°), -9.8m/s^2*t + 9.20m/s^2*sin(69°))

for the position we can integrate it again over time, but this time we do not have any integration constant because the initial position of the ball will be (0,0)

P(t) = (9.20*cos(69°)*t, -4.9m/s^2*t^2 + 9.20m/s^2*sin(69°)*t)

now, the time at wich the horizontal displacement is 4.22 m will be:

4.22m = 9.20*cos(69°)*t

t = (4.22/ 9.20*cos(69°)) = 1.28s

Now we evaluate the y-position in this time:

h = -4.9m/s^2*(1.28s)^2 + 9.20m/s^2*sin(69°)*1.28s = 2.96m

The height above the release point is 2.96 meters.

3 0

3 years ago

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Hydraulic systems utilize Pascal's principle by transmitting pressure from one cylinder (called the primary) to another (called

Paul [167]

Answer:

F1= 122.93 N

Explanation:

Pascal´s Principle

Pascal´s Principle can be applied in the hydraulic press:

If we apply a small force (F1) on a small area piston A1, then, a pressure (P) is generated that is transmitted equally to all the particles of the liquid until it reaches a larger area piston and therefore a force (F2) can be exerted that is proportional to the area (A2) of the piston:

P=F/A

P1=P2

$\frac{F_{1} }{A_{1}} = \frac{F_{2} }{A_{2}}$ Formula (1)

Data

D1 = 1.85 cm : primary cylinder piston diameter

D2 = 24.5 cm : secondary cylinder piston diameter

m = 2200-kg : car mass

Piston area calculation

$A_{1} = \frac{\pi *(D_{1})^{2} }{4}$

$A_{1} = \frac{\pi *(1.85)^{2} }{4}$

A1= 2.688 cm²

$A_{2} = \frac{\pi *(D_{2})^{2} }{4}$

$A_{2} = \frac{\pi *(24.5)^{2} }{4}$

A2 = 471.435 cm²

Calculating of the weight of the car (W)

W = m*g = 2200-kg * 9.8 m/s² = 21560 N

Calculation of the force in Newtons to be exerted on the primary cylinder piston

Data:

A1= 2.688cm²

A2= 471.435 cm²

F2 = W= 21560 N

We replace data in the formula (1)

$\frac{F_{1} }{A_{1}} = \frac{F_{2} }{A_{2}}$

$F_{1} =\frac{F_{2}*A_{1} }{A_{2} }$

$F_{1} =\frac{21560N*2.688 cm^{2} }{471.435 cm^{2} }$

F1= 122.93 N

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4 years ago

Which of the followings is true about EMF?

goldenfox [79]

Answer:

a. TRUTH

b. FALSE

c. TRUTH

d. FALSE

Explanation:

The emf (electromagnetic force) is generated in a loop or solenoid by the change in the magnetic flux in a closed conductor path (for example, a wire).

This can be noted in the following formula, which is known as the Lenz's law:

$emf=-N\frac{d\Phi_B}{dt}=-N\frac{d(AB)}{dt}$ (1)

Then, the change, in time, of the area of the conductor, or the change in the magnitude of the magnetic field, the induced emf acquires different values. Furthermore, the loops have a resistance, then, a current can be measured when an emf is induced.

Based on this information you have:

a. an induced emf is caused by a changing magnetic flux. TRUTH

b. an emf can only be induced in a conducting loop by moving the loop through an area that has a constant magnetic field. FALSE

c. an induced emf can be observed by measuring the current that is created. TRUTH

d. an induced emf and conventional induced current are in opposite directions. TRUTH (the minus sing in the equation (1) )

7 0

3 years ago

Define sporulation and fragmentation​

Define sporulation and fragmentation