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
bonufazy [111]
4 years ago
9

A mystery element has three isotopes of the following masses and percent abundances: 93.597 amu at 23.63 % abundance, 96.191 amu

at 30.53 % abundance, and 95.502 amu. What is the exact atomic mass of the mystery element?
Physics
1 answer:
iogann1982 [59]4 years ago
8 0

Answer:

92.397amu

Explanation: The exact amu of the mystery element is obtained by multiplying the relative abundance of each individual isotope by  its respective amu and then summing the results.

The sum of the total relative abundance for all the isotopes should be 100%.

However, the relative abundance of the isotope with 95.502amu is not given; therefore to obtain it we subtract the sum of the known relative abundances from 100% as follows:

Relative abundance of isotope with 95.502amu = 100-(23.63+30.53) = 42.84%

You might be interested in
Are you better off in an accident where the hood is
horsena [70]

Answer:

you would be better off if the car bounced backwards

Explanation:

because if the hood was dismembered than you have a high chance of very bad injury but if it is just bounced back you would have less chance of getting hurt if properly sitting and seat belted.

5 0
3 years ago
Which of the following is equal to an impulse of 15 units?
strojnjashka [21]

Answer:

B) Force = 7.5, Time = 2 is equal to an impulse of 15 units

3 0
3 years ago
Read 2 more answers
An 80.0 N force accelerates a 6.0 kg object from 4.0 m/s to 8.0 m/s. What is the
kolezko [41]

Answer:

24kgm/s

Explanation:

Given parameters:

Force  = 80N

Mass of object  = 6kg

Initial velocity  = 4m/s

Final velocity = 8m/s

Solution:

Impulse  = ?

Solution:

The impulse on a body is its change in momentum.

    Impulse  = m (v  - u )

m is the mass

v is the final velocity

u is the initial velocity

  Now insert the parameters and solve;

          Impulse  = 6 (8 - 4) = 24kgm/s

8 0
3 years ago
Additional Problem: A simple pendulum, consisting of a string (of negligible mass) of length L with a small mass m at the end, i
kykrilka [37]

Answer:

a)   v = √ 2gL  abd  b)  θ = 45º

Explanation:

a) for this part we use the law of conservation of energy,

Highest starting point

       Em₀ = U = mg h

Final point. Lower

       Em₂ = ½ m v²

      Em₀ = Em₂

      m g h = ½ m v²

      v = √2g h

      v = √ 2gL

b) the definition of power is the relationship between work and time, but work is the product of force by displacement

     P = W / t = F. d ​​/ t = F. v

If we use Newton's second law, with one axis of the tangential reference system to the trajectory and the other perpendicular, in the direction of the rope, the only force we have to break down is the weight

     sin θ = Wt / W

     Wt = W sin θ

This force is parallel to the movement and also to the speed, whereby the scalar product is reduced to the ordinary product

     P = F v

The equation that describes the pendulum's motion is

    θ = θ₀ cos (wt)

Let's replace

    P = (W sin θ) θ₀ cos (wt)

    P = W θ₀ sint θ cos (wt)

We use the equation of rotational kinematics

    θ = wt

    P = Wθ₀ sin θ cos θ

Let's use

   sin 2θ = 2 sin θ cos θ

   P = Wθ₀/2 sin 2θ

This expression is maximum when the sine has a value of one (sin 2θ = 1), which occurs for 90º,

    2θ = 90

    θ = 45º

5 0
3 years ago
Meaning of neutral in a car​
Savatey [412]

Answer: Neutral in a car is the mode where you can rotate the steering wheel but u can’t drive or move the car.

6 0
3 years ago
Other questions:
  • A person carries a mass of 10 kg and walks along the +x-axis for a distance of 100m with a constant velocity of 2 m/s. What is t
    13·2 answers
  • As a substance is changing from a liquid to a gas, the distance
    5·1 answer
  • Would it be true that if you double the distance of an astronaut from a planet, the gravitational pull between them would be hal
    10·2 answers
  • What control what enter and leaves the cell in a animal cell
    8·1 answer
  • A person jumps off a diving board 5.0 m above the water's surface into a deep pool. The person's downward motion stops 2.2 m bel
    7·1 answer
  • What does a wave do that is so important?
    15·2 answers
  • I need help on this
    11·1 answer
  • A rocket sled accelerates from rest for a distance of 645 m at 16.0 m/s2. A parachute is then used to slow it down to a stop. If
    8·1 answer
  • susan and joe push a table 18 meters down a hall by exerting a force of 200 newtons (n). what is the total amount of work done o
    10·1 answer
  • Q3, A ball of mass 5.0 kg moving with a Velocity of 10.0 ms collides
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!