Answer:
power =( 890 N x 12 m ) / 22 s=
= 485 Watts
Explanation:
Answer:
B = 191.26 cm
θ = -14.73°
Explanation:
given,
magnitude of the first displacement(A) = 146 cm
at an angle of 124°
resultant magnitude = 137 cm
and angle made with x-axis by the resultant(R) = 32.0°
component of A in X and Y direction
A x = A cos θ = 146 cos 120° = -73 cm
A y = A sin θ = 146 sin 120° = 126.4 cm
now component of resultant in x and y direction
R x = 137 cos 35°
= 112.2 cm
R y = 137 sin 35°
= 78.6 cm
resultant is the sum of two vectors
R = A + B
R x = A x + B x
B x = 112.2 - (-73) = 185.2 cm
B y = R y - A y
B y = 78.6 - 126.4 = -47.8 cm
magnitude of B
B =
B =
B = 191.26 cm
angle
θ = -14.73°
Both forming images when placed in their respective places best describes Becquerel’s experiments.
<h3>What is Becquerel’s experiment?</h3>
This was conducted by Henri Becquerel in which he sought to know how uranium salts are affected by light.
He discovered that the salts emits a penetrating radiation and formed an image in the presence of light but didn't form any in darkness.
Read more about Becquerel’s experiment here brainly.com/question/27584302
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Answer:
The maximum value of the magnetic field in the wave is .
Explanation:
Given that,
Average value of pointing vector = 0.724 W/m²
We need to calculate the magnetic field
Using formula of pointing vector
The average value of pointing vector
....(I)
We know that,
Put the value of in equation (II)
Put the value into the formula
Hence, The maximum value of the magnetic field in the wave is .
Answer:
The composition of a sodium ion is 11 protons 10 electrons an 12 neutrons
Explanation:
Sodium has one electron in its outermost shell. In addition to that, sodium ion is formed by the electrovalent combination of sodium atom with another element. During this, the sodium atom loses an electron to become a positively charged sodium ion.
This loss of an electron changes the number of electrons in the atom from 11 to 10. The proton number and mass number still remains 11 and 12 respectively since the combination only affects the electrons of the element.
This imbalance between the proton number and electron number in the sodium ion is what makes it positively charged ()
Constituent summary of ()
Proton number: 11
Neutron number: 12
Electron number: 10