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VladimirAG [237]
2 years ago
11

What variables determine the amount of electrical energy an appliance uses?

Physics
2 answers:
Anastasy [175]2 years ago
8 0
How many days it’s used of the year
Mumz [18]2 years ago
3 0

Answer:

How much electricity the appliance can hold, the number of hours the appliance is used in a day, and how many days it is used of the year.

Explanation:

Once we find all these things its simple math to figure out how many watts the appliance uses.

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Why does the Moon seem to change shape?
Licemer1 [7]

Answer:

A

Explanation:

3 0
3 years ago
Read 2 more answers
A particle with a charge of −1.24×10−8c is moving with instantaneous velocity v⃗ = (4.19×104m/s)i^ + (−3.85×104m/s)j^ . part a w
Bezzdna [24]

Answer:

F = 0i (in the x-direction), 0j (in the y-direction),-8.59*10^-4 N k (In the z-direction)

Explanation:

The force given by charged particles moving in a magnetic field is given below (cross is cross product, they don't have that format in the equation tool):

F=qv (cross) B\\

Now we can perform the cross product between v and B

v(cross)B = \left[\begin{array}{cc}4.19*10^{4} &-3.85*10^{4}\\1.8&0&\en[tex]v(cross)B = 69300 (kg*m/(s^2*C))\\d{array}\right][/tex]

Now multiply by Q (charge) to get the force

F = -1.24*10^-8 * 69300\\F = -8.59*10^-4N

F = -8.59*10^-4 N k

F = 0i, 0j, (-8.59*10^-4)k

6 0
3 years ago
Read 2 more answers
A bullet with a mass ????b=13.5 g is fired into a block of wood at velocity ????b=249. The block is attached to a spring that ha
larisa86 [58]

Answer:

M = 0.436 kg

Explanation:

As per energy conservation we can say that energy stored in the spring at the position of maximum compression must be equal to the kinetic energy of bullet and block system

so here we have

\frac{1}{2}(m + M)v^2 = \frac{1}{2} kx^2

here we know that

k = 205 N/m

x = 35 cm

\frac{1}{2}(m + M)v^2 = \frac{1}{2}(205)(0.35)^2

now by momentum conservation we know that

mv_o = (m + M)v

v = \frac{m}{m + M} v_o

now plug in all values in it

v = \frac{0.0135}{0.0135 + M}(249)

now from above equation

\frac{1}{2}(0.0135 + M)( \frac{0.0135}{0.0135 + M}(249))^2 = 12.56

\frac{5.65}{0.0135 + M} = 12.56

by solving above equation we have

M = 0.436 kg

3 0
3 years ago
*An inductor is capable of dissipating 50W of heat energy when a current 0.8A flows through it at a certain frequency. Calculate
ale4655 [162]
I think that your answer would be D
8 0
3 years ago
Rita places a 2.5 kg block on a frictionless inclined plane that is 30 degrees above horizontal. She applies a horizontal force,
vitfil [10]

Answer:

14.2

Explanation:

find horizontal force of the weight = 2.5kg x 9.8 Sin30 = 12.3 N

to prevent the sliding she needs to pull horizontally

Fh = 12.3 /Cos 30 =14.2N

7 0
3 years ago
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