3 / 8 square meters = () square decimeters

3 / 8 square meters = () square decimeters

It's equal to 0.375 square meters

3.5 square meters=______ Square meter______ Square decimeter

5 square meters = 3 square meters, 50 square decimeters; so the answer is: 3, 50

3 square meters = () square decimeters

3 square meters = (300) square decimeters

Voltage multiplied by current equals power. Why multiply by power factor?

There is a conceptual confusion in your question
The former refers to instantaneous power, voltage and current also refer to instantaneous voltage and current
The latter refers to active power, voltage and current refer to voltage RMS and current RMS respectively
Active power is the average value of instantaneous power in one or several signal periods
Namely: instantaneous power = instantaneous voltage × instantaneous current
Active power = voltage RMS × current RMS × power factor

If a rope is folded in half and then measured in half, it will be 3 / 4 of its length. The length of the rope is () M

¾×4=3
The rope is (3) m long

In the international system of units, the unit of time is. Its symbol is

The commonly used tool for measuring time is a stopwatch. In the international system of units, the unit of time is seconds. Its symbol is s

When the amplitude is a, the period is t. if the amplitude is increased by 3a, the period is T1. How to find the ratio of t to T1?

Answer: 1:1
The period of spring oscillator is not related to amplitude, but to mass
Formula:
T=2π√m/k
K is the coefficient of the spring, M is the mass of the ball

When a 220 V 40 W light bulb lights normally, its filament resistance is []. When it is connected to a 110 V circuit, its actual power is []

1210 Ω, 10W
The first blank is obtained by P = IU, I = u / R, P = u ^ 2 / R,
The second space is also obtained by P = u ^ 2 / R

A glass ball weighs 5 Newtons in air and 3 Newtons in water
Find the buoyancy of glass, the volume of drained water, the volume of glass ball, the mass of glass ball and the density of glass ball

Because g = 5N,
G1 = G-F floating = 3N, so f floating = 2n,
The volume of drained boiling water = the volume of glass ball, f floating = the gravity of drained water = ρ VG, take ρ = 1kg / m ^ 3, g = 10m / S ^ 2,
Then V row water = V ball = 2 * 10 ^ - 4m ^ 3
G=mg,m=0.5kg
ρ sphere = m / v = 2.5 * 10 ^ 3kg / m ^ 3

Formula of isosceles right triangle
The formula of equilateral right triangle
Or give the formula answer directly!
emergency
95 is right
If you answer wrong, drag it out and kill it

The ratio of three sides of isosceles right triangle is 1:1: root 2
The right angle side is about 32.95