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
iVinArrow [24]
2 years ago
7

If 14:15=42:x find the value of x​

Physics
2 answers:
Scrat [10]2 years ago
6 0
Answer:
45

Solution: you can use the above method or you can cross multiply. That’s mean multiplying the numerator of the left side by the denomination of the right. And the denominator on the left by the numerator on the right (it makes an x shape). Therefore, your algebraic equation should look like this and solve for x

14x=15*42
14x=630
X=630/14
X=45
Yuliya22 [10]2 years ago
3 0

Answer:

x=45

Explanation:

by taking 42 and dividing it by 14 you get 1/3, because 14 is 1/3 of 42 you can then see that the ratio is multiplied by 3. si then you can just multiply 15 by 3 to get 45

You might be interested in
2. A 2.5 meter-long wave travels at 1 m/s towards a fixed boundary. After 2 seconds, how does the wave appear?
Elan Coil [88]

Answer:

Since incident wave and its reflected part in opposite phase superimpose on each other

So correct answer will be

Option B

Explanation:

Here we know that the wave reflection is done by rigid boundary

So when wave is reflected by the boundary then its phase is reversed by 180 degree

so the reflected wave is in reverse phase from the boundary

so we can superimpose the reflected part with incident wave to dine the resultant wave

So the phenomenon is given as follow

6 0
2 years ago
A 2 microcoulomb charge is placed at a distance of 0.25 m away from a 3.6 microcoulomb charge. Describe the type of electrostati
EleoNora [17]

Answer: 1.04N

Explanation:

Given

q1 = 2*10^-6C

q2 = 3.6*10^-6C

r = 0.25m

k = 9*10^9

Magnitude of electrostatic force can be calculated by using coulomb's law. Coulomb's law states that, "the magnitude of the electrostatic force of attraction or repulsion between two point charges is directly proportional to the product of the magnitudes of charges and inversely proportional to the square of the distance between them."

F =(kq1q2) / r²

F = (9*10^9 * 2*10^-6 * 3.6*10^-6) / 0.25²

F = 0.0648/0.0625

F = 1.04N

The type of electrostatic force between the charges is the repulsive force

7 0
3 years ago
Read 2 more answers
What is energy and object has due to its motion
jolli1 [7]
The energy stored in motion is called kinetic energy.
3 0
3 years ago
Is glass weigh more than wood
inn [45]
It depends how large the object is. But, if it is 2 by 4, most likely the wood sieges more than the glass. Hope this helps.
6 0
2 years ago
Read 2 more answers
What ocean depth would the volume of an aluminium sphere be reduced by 0.10%
yKpoI14uk [10]

Answer:

6400 m

Explanation:

You need to use the bulk modulus, K:

K = ρ dP/dρ

where ρ is density and P is pressure

Since ρ is changing by very little, we can say:

K ≈ ρ ΔP/Δρ

Therefore, solving for ΔP:

ΔP = K Δρ / ρ

We can calculate K from Young's modulus (E) and Poisson's ratio (ν):

K = E / (3 (1 - 2ν))

Substituting:

ΔP = E / (3 (1 - 2ν)) (Δρ / ρ)

Before compression:

ρ = m / V

After compression:

ρ+Δρ = m / (V - 0.001 V)

ρ+Δρ = m / (0.999 V)

ρ+Δρ = ρ / 0.999

1 + (Δρ/ρ) = 1 / 0.999

Δρ/ρ = (1 / 0.999) - 1

Δρ/ρ = 0.001 / 0.999

Given:

E = 69 GPa = 69×10⁹ Pa

ν = 0.32

ΔP = 69×10⁹ Pa / (3 (1 - 2×0.32)) (0.001/0.999)

ΔP = 64.0×10⁶ Pa

If we assume seawater density is constant at 1027 kg/m³, then:

ρgh = P

(1027 kg/m³) (9.81 m/s²) h = 64.0×10⁶ Pa

h = 6350 m

Rounded to two sig-figs, the ocean depth at which the sphere's volume is reduced by 0.10% is approximately 6400 m.

6 0
3 years ago
Other questions:
  • What is the base matterial for plastic wrap
    10·1 answer
  • Which type of wave is allowing you to read this test question?
    12·1 answer
  • A skateboarder rolls off a ledge that is 1.12 m high, and lands 1.48 m from the base of the edge. How much time was he in the ai
    12·1 answer
  • If a Is close enough to a ,then it will form a nova?
    9·1 answer
  • Does friction cause mechanical energy to change to thermal energy
    13·1 answer
  • Lead has a density of 11.3 g/cm3 and a mass of 282.5 g. What is its volume
    8·1 answer
  • A car is traveling at vx = 30 m/s . The driver applies the brakes and the car decelerates at ax = -5.0 m/s2 . What is the stoppi
    13·1 answer
  • The diameter of earth is 12,756 km. How many times greater the suns diameter than the diameter of earth
    14·1 answer
  • Please help me with this question I’m honestly done with this class.
    6·1 answer
  • Which lighting source has lower energy costs and a longer life but can be dangerous?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!