A driver's car overheats. He hypothesizes that a broken fan belt has caused this problem. Which discovery is MOST likely to cause him to revise his hypothesis? a. reduction in outdoor temperature b. an intact fan belt c. a temperature warning light d. a crack in the radiator

Answers

Answer 1

Answer: B. An intact fan belt

Related Questions

If you had two forces, one with a magnitude of 25 N and the the other with a magnitude of 100 N, what would be the maximum net force these forces could exert on an object?
True or false: Nicolaus Copernicus devised the first comprehensive Sun-centered model.
Current can also be calleda. voltage. b. electricity. c. moving charges. d. b. and c.
Explain three differences between a science and a pseudoscience.
Which of the following creates a magnetic force?. A) No Poles. B) Magnetic Charge. C) Magnetic Current. D) North and South Poles

how much energy is transferred when 1 gm of boiling water at 100 degree celcius condenses to water at 100 degree celcius?

Answers

The latent heat of vaporization for water is 2257 KJ per Kg . I'm pretty sure that's exactly the same as 2257 joules per gram. So ... When 1 gm of STEAM at 100 C condenses to 1 gm of liquid water at 100 C, it releases 2257 joules of heat energy to its environment.

22.5 x 10 to the power 5 kilo/joules energy is transferred when boiling water at 100 degree celcius condenses to water at 100 degree celcius

cleopatra needle, an ovelisk given by the egyptian government to great britian in the 19th century, is 20+m tall and has a mass of about 189,000 kg. suppose the monument is lowered onto its side and dragged horizontally to a new location. an applied force of 760,000 N is excerted on the monument, so that its net acceleration is 0.11 m/s2. what is the weight, the net force, the frictional force and the coefficient of friction phycis

Answers

To solve this problem, we can use Newton's second law and the equations of motion. First, let's calculate the weight of the Cleopatra's Needle, which is the mass multiplied by the acceleration due to gravity (9.81 m/s²):

Weight = mass × acceleration due to gravity
Weight = 189,000 kg × 9.81 m/s² ≈ 1,854,090 N

Next, let's calculate the net force acting on the monument using Newton's second law (F = m × a), where F is the force, m is the mass, and a is the acceleration:

Net Force = mass × acceleration
Net Force = 189,000 kg × 0.11 m/s² ≈ 20,790 N

The net force applied is 760,000 N, so the frictional force can be calculated by subtracting the net force from the applied force:

Frictional Force = Applied Force - Net Force
Frictional Force = 760,000 N - 20,790 N ≈ 739,210 N

The coefficient of friction (μ) can be calculated using the formula for frictional force (Frictional Force = μ × Normal Force). Since the normal force is equal to the weight of the monument:

μ = Frictional Force / Weight
μ = 739,210 N / 1,854,090 N ≈ 0.3987

So, the coefficient of friction is approximately 0.3987.

If The dimensions of a brick that weighs 25N are 0.19m x 0.07m x 0.095m. What pressure does the brick exert on the ground if it is resting on its largest face?

Answers

1 newton per square meter = 1 pascal of pressure.

The largest face of the brick is (0.19 x 0.095) = .01805 square meter

25N/0.01805 = 1,385 newtons per square meter = 1,385 pascal = 1.385 kPa

A woman takes her dog Rover for a walk on a leash. She pulls on the leash with a force of 30.0 N at an angle of 29° above the horizontal sidewalk. What force is tending to pull Rover forward, parallel to the horizontal?

Answers

Answer:

The force parallel to the horizontal is 26.24 N

Explanation:

She pulls on the leash with a force F = 30 N, this force, since its at an angle of 29° (i will cal this angle $\theta$ ), it has a force component on x (the horizontal, i will call this force $F_(x)$ ) and a force component on y (the vertical, i will call this $F_(y)$ ).

This can be seen in the attached picture.

Since we are asked about the force parallel to the horizontal, we need to find the component of the force $F_(x)$ , since $F_(x)$ is the adjacent angle, we need to use cosine:

$F_(x)=Fcos \theta$

since $F=30N$ and $\theta=29$

$F_(x)=(30N)cos(29)$

$F_(x)=(30N)(0.8746)$

$F_(x)=26.24N$

The force parallel to the horizontal is 26.24 N

Which of the following accurately describes the differences between the SI and English systems of measurement? A. The two systems are used interchangeably in the scientific and technical communities.

B. The English system is more commonly used in Europe than in the United States.

C. The English system is preferred for use in the scientific and technical communities due to its ease of use over the SI system.

D. The SI system, which is based on the metric system, has been more widely adopted than the English system, which is harder to use.

Answers

The best answer is D. The SI system, which is based on the metric system, has been more widely adopted than the English system, which is harder to use. In order to standardize measurements, the International System of Units or the SI units are commonly used around the world since they are more easy to understand and compare than the English unit.

What does the measurement 6.5 V represent?

Answers

I'm not sure.
Where did you see it ?

If you saw it on a voltmeter, then it stands for "6.5 volts".
It tells you that the 'potential difference' or 'electromotive force'
between the two points connected to the meter is 6.5 volts.

-- If a 1-ohm resistor were connected between those two points,
then 6.5 coulombs of charge would move through the resistor every
second. We would say that the "current" through the resistor is
6.5 Amperes, or "six'na half amps".

-- Each coulomb of charge (6.25 x 10¹⁸ electrons) that moves from
one of those points to the other one either gains or loses 6.5 joules
of energy, depending on which direction it moves.

-- So the resistor would need to shed heat somehow, at the rate of
6.5 watts (6.5 joules per second). If it couldn't do that, then it would
go through an interesting series of changes. It would get warm, then
get hot, then glow cherry red, then glow bright red, then glow orange,
then glow bright yellow, then make a sound like a "POP". Then it would
break in the middle, and a little wisp of smoke would come out of it.
The two halves of the resistor would sink, sag from their wires, and
the current between the two points would stop.

We would say that the resistor had "fused", "failed", "melted", "burned out",
or "bought the farm" ... all because it couldn't get rid of heat fast enough.

Answer: Electric potential

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