1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ziro4ka [17]
3 years ago
5

The number of radioactive nuclides from a radioactive source has reduced to 1/6

Physics
1 answer:
Anni [7]3 years ago
4 0

Answer:

λ = 0.03 s⁻¹

Explanation:

The formula for decay constant can be used as follows:

N = N_oe^{-\lambda t}\\\\\frac{N}{N_o} = e^{-\lambda t}

where,

\frac{N}{N_o} = ratio of remaining nuclei to the initial value of nuclei = \frac{1}{6} = 0.167

t = time = 60 s

λ = decay constant = ?

Therefore,

0.167 = e^{-\lambda(60\ s)}\\\\-\lambda (60\ s) = ln(0.167)\\\\\lambda = \frac{-1.7917}{- 60\ s}

<u>λ = 0.03 s⁻¹</u>

You might be interested in
The activation of clotting factors will be blocked.
dedylja [7]

With the blocking of activation of clotting factors, the rate of conversion of fibrinogen to fibrin will decrease to a huge extent and this will prevent the clot formation.

Option A

<h3><u>Explanation:</u></h3>

The process of stopping of flow of blood through any wound by formation of a clot is known as blood clotting. The clot in blood is formed by conversion of the fibrinogen protein into its polymer form fibrin which forms a meshwork.

The conversion of fibrinogen to fibrin requires a lot of enzymes and factors present which is required one by one, known as the Cascade theory. Total of 13 factors are required, where there are prothrombin, thromboplastin, and different other factors. Inactivation of any of the 13 factors will lead to less conversion of fibrinogen to fibrin, thereby the rate of conversion will highly decrease.

7 0
3 years ago
A 2-kg box sits on a horizontal table. the force of friction between the box and the table is 10 n. the box is pushed to the rig
dangina [55]
By Newton's 2nd law of motion, F = ma, where F is force, m is mass, and a is acceleration.

Rearranging this equation to find acceleration would give us:
a = F/m

The horizontal force to the right is 10N, because the box is pushed to the right with a force of 20N, and the friction force of 10N opposes that, so:
20N - 10N = 10N

The mass is 2kg.

Putting these values into the equation gives us:
a = F/m
= 10/2
= 5ms^-2

The acceleration of the box is 5ms^-2
6 0
4 years ago
9. ¿Por qué no es lo mismo distancia que desplazamiento?
masya89 [10]

Answer:

Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion. Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.

Explanation:

5 0
3 years ago
What do electrons move from
Alona [7]

Answer:

Negatively charged, to positively charged parts

Explanation:

Electrons are negative, negative is attracted to positive.

7 0
3 years ago
A jet ski accelerates towards a ramp at 2.5 m/s/s for 35 s until it finally flies off the water. Determine the
zlopas [31]

Answer:

1531 m

Explanation:

The motion of the jet ski is an uniformly accelerated motion, so we can find the distance travelled by using the following suvat equation:

s=ut+\frac{1}{2}at^2

where

s is the distance

u is the initial velocity

t is the time

a is the acceleration

For the jet ski in this problem,

a=2.5 m/s^2

t = 35 s

u = 0 (it starts from rest)

Solving for s, we find the distance travelled:

d=0+\frac{1}{2}(2.5)(35)^2=1531 m

8 0
3 years ago
Other questions:
  • A light ray is incident on a mirror at an angle θ with respect to the normal. what is the direction of the reflected ray?
    6·1 answer
  • Find the work w1 done on the block by the force of magnitude f1 = 65.0 n as the block moves from xi = -3.00 cm to xf = 3.00 cm .
    13·1 answer
  • In which phase of mitosis are chromosome first seen as a result of chromatin coiling?
    10·1 answer
  • A real heat engine operates between temperatures tc and th. during a certain time, an amount qc of heat is released to the cold
    5·1 answer
  • What is the potential energy of a 3 kg rock sitting at the top of a 21 meter high cliff?
    8·1 answer
  • How many minutes of daylight do we gain after winter solstice
    12·1 answer
  • A toboggan and rider have a total mass of 100 kg and travel down along the (smooth) slope defined by the equation y=0.2x2. At th
    14·1 answer
  • An electric motor rotating a workshop grinding wheel at 1.06 102 rev/min is switched off. Assume the wheel has a constant negati
    8·1 answer
  • Which type of physical activity is being performed in the picture?
    6·2 answers
  • A 60 kg runner accelerates during a race at 3m/s2. what force is exerted on the earth with each step
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!