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4 years ago

You are more likely to stick to a program if it is really rigorous? true or false

Physics

2 answers:

snow_tiger [21]4 years ago

7 0

Hello.

This statment is false.

Have a nice day

lianna [129]4 years ago

6 0

You are not likely the answer is false

You might be interested in

The perception of high or low sounds is called ____________. 2. The _______________ is a measurement unit for intensity of sound

matrenka [14]

1. pitch

2. decibel

3. sorry, i dont know

4. c

5. acoustics

6 0

3 years ago

Need an explanation please. Brainliest will be awarded.

Maurinko [17]

We're adding two vectors here. The first is 300 Newtons to the right, which we can write as (300, 0), meaning 300 to the right, 0 up.

The second is 300 at let's say a 45 degree angle down. For the components we have an isosceles right triangle with hypotenuse 300, so the components are both magnitude 300/√2 = 150√2. So we can write this vector (150√2, -150√2), the negative sign because it points down in the y direction.

Adding is componentwise. The resulting force is (300+150√2, -150√2).

That has square magnitude

r² = (300+150√2)² + (-150√2)² = 150² ( (2+√2)² + (√2)² )

= 150²( (6 + 4√2) + 2)

= 300²(2+√2)

r = 300 √(2+√2) Newtons

That's the answer; I'm not sure if your class expects a calculator approximation, which is 554.3 Newtons.

7 0

3 years ago

A balanced three-phase inductive load is supplied in steady state by a balanced three-phase voltage source with a phase voltage

Vsevolod [243]

Answer: Voltage, V=120V; Power,P=10kW or 10,000W

P = V*I (where I is current)

∴ I = P/V =10000/120 = 83.3A

Resistance, R = V/I = 1.44 ohms

Power Factor(cosФ)= 0.9 = Resistance, R/Impedance, Z

∴ Z = 1.44/0.9 = 1.6 ohms

Explanation: The three-phase inductive load supply carries alternating current of the same frequency and voltage amplitude relative to a common reference but phase difference of one third of a cycle between each of three voltages and currents.

8 0

4 years ago

A wood pipe having an inner diameter of 3 ft. is bound together using steel hoops having a cross sectional area of 0.2 in.2 The

WINSTONCH [101]

Answer:

31.67 in

Explanation:

Given:

Diameter of the pipe, D = 3ft = 36 in

cross-sectional area of the steel = 0.2 in²

Note: Refer to the figure attached

From the free body diagram represented in the figure, we have

ΣFx = 0

pressure × projected area = 2 × Force in steel

Now, the projected area = spacing (s) × diameter of the wood pipe

force in steel = stress in steel (σ) × cross-sectional area of the steel

on substituting the values we get

4 ksi × (s × 36 in) = 2 × σ × 0.2 in²

also, allowable hoop stress = 11.4 ksi

thus,

σ = 11.4 ksi = 11.4 × 10³ psi

therefore, we have

4 psi × (s × 36 in) = 2 × 11.4 × 10³ psi × 0.2 in²

thus,

s = 31.67 in

hence the maximum spacing is 31.67 in

3 0

4 years ago

8. How do you think that might be the reason why the Sun warms more in the summer? To give your explanation can rely on the angl

gregori [183]

Answer:

Because the angle of the sun moves/rotates in the summer, the sun's rays move their angle and impact the earth.

8 0

2 years ago