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4vir4ik [10]
3 years ago
11

What is the shortest possible time in which a bacterium to travel distance of 8.4cm across a Petri dish at a constant velocity o

f 1.2 cm/s
Physics
1 answer:
Dimas [21]3 years ago
3 0

Answer:

\boxed{\sf Shortest \ possible \ time = 7 \ seconds}

Given:

Distance travelled (s) = 8.4 cm

velocity (v) = 1.2 cm/s

To Find:

Shortest possible time (t) in which a bacterium travel a distance 8.4 cm across a Petri Dish

Explanation:

\boxed{ \bold{\sf Time \ (t) = \frac{Distance \ travelled \ (s)}{Velocity \ (v)}}}

Substituting values of Distance travelled (s) & Velocity (v) in the equation:

\sf \implies t =  \frac{8.4}{1.2}

\sf \implies t =  \frac{7 \times  \cancel{1.2}}{ \cancel{1.2}}

\sf \implies t = 7 \: s

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Define the unit of current. Name the device which is used to measure
Free_Kalibri [48]

Answer:

The ampere, symbol A, is the SI unit of electric current. It is defined by taking the fixed numerical value of the elementary charge e to be 1.602 176 634 x 10-19 when expressed in the unit C, which is equal to A s, where the second is defined in terms of ΔνCs.

the device used to measure current in a circuit is ammeter

3 0
3 years ago
PLEASE HELP I HAVE FINALSSS​
vitfil [10]

Answer: 26.67 m/s

Explanation:

Given

Length traveled by the ball s=40\ m

Time taken to reach the goal post is t=3\ s

Initial velocity u=0\ m/s

Using the second equation of motion

\Rightarrow s=ut+\frac{1}{2}at^2\\\Rightarrow 40=0+\frac{1}{2}a(3)^2\\\Rightarrow a=\frac{80}{9}\ m/s^2\\

Now using

\Rightarrow v^2-u^2=2as\\\\\Rightarrow v^2-0=2\times \frac{80}{9}\times 40\\\\\Rightarrow v=\sqrt{\dfrac{80\times 80}{9}}=\dfrac{80}{3}\\\Rightarrow v=26.67\ m/s

The velocity of ball will be 26.67 m/s

8 0
3 years ago
Why is their displacement the same when the distance each traveled was different?
motikmotik
Displacement is how far something is from its starting position

for example if X moved 10 feet, turned around and moved 30 feet, its distance would be 40, but the displacement would be 20,
and if Y Moved 2 feet, and turned around and moved 22 feet, its distance would be 24, but its displacement would also be 20
4 0
4 years ago
A satellite is spinning at 0.01 rev/s. The moment of inertia of the satellite about the spin axis is 2000 kg · m2. Paired thrust
enyata [817]

Answer:

Explanation:

Angular velocity of satellite

= 2π x .01

= .02 π rad /s

Initial angular momentum

Moment of inertia x angular velocity

= 2000 x .02 π

= 125.6 unit

Linear impulse produced by each thruster

= 15 N.s

Angular impulse

= 15 x 1.5 = 22.5 unit

Total angular impulse in 30 pulses

= 22.5 x 2 x 30

1350

This angular impulse will add total angular momentum of

1350 unit

So total angular momentum after 30 pulses

= 1350 + 22.5

= 1372.5 unit

So  final angular  velocity

= final  angular momentum / moment of inertia

= 1372.5 / 2000

=   0 .686 rad /s

3 0
3 years ago
Which of the following regions of the EM epxtrum has the highest
Olin [163]

Answer:

1) x rays

Explanation:

Honestly Gamma rays has the Highest frequency, but in your options, gamma rays is not among, so x rays has the highest frequency among your options.

by Manshow

4 0
3 years ago
Read 2 more answers
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