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alexandr1967 [171]
4 years ago
15

if your prediction is proven incorrect you should leave out all observations that do not support your prediction or simply chang

e your prediction
Physics
2 answers:
wlad13 [49]4 years ago
3 0

-- You make a prediction.

-- Your prediction is proven incorrect. (Somebody somewhere somehow came up with an experiment that produced an observation that can't be debated, disputed, or denied, and it demonstrated that your prediction doesn't hold water.)

--  Your prediction is wrong.  There's no getting around it.  You just have to get over it, and give up on that prediction completely.  If you try to bend and fold facts in order to hold on to that prediction, you're just fooling yourself.

-- The smart thing to do is to <em>learn</em> from the other guy's research, know that your first prediction is incorrect, and use your new knowledge to refine your prediction ... replacing it with a new, different one.

Maslowich4 years ago
3 0

Answer:

Explanation:

Prediction is a presumption that is made before any experiment.

It is a set of personal thoughts that are developed while we study any experiments and the think about the possible outcomes.

There is a possibility that prediction can be different than that of observation after an experiment that certainly does not mean to loose either the predictions or observations.

Sometimes what we have predicted do not match the observations because we might have ignored the conditions that arises during this time.

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An airplane cruises at 850 km/h relative to the air. It is flying from Denver, Colorado, due west to Reno, Nevada, a distance of
skad [1K]

Answer:

difference in flight time= 0.3023 hour

Explanation:

The question is incomplete, but I found it in your textbook.

Spped of aircraft = 850 km/h

Opposing speed of wind = 90km/h

Hence, the net speed when it's travelling west = 850 - 90 = 760 km/hr

The distance covered = 1200km

time taken = distance/ time = 1200/ 760 = 1.5789 hours

When coming back, the speed of the wind is complementary to the speed of the aircraft so

net speed when it's coming back = 850 +90 = 940 km/hr

time taken in this instance = 1200/ 940 = 1.2765 hours

Hence, the difference in flight time= 1.5789 - 1.2765 = 0.3023 hour

8 0
3 years ago
1. True or False: All sound happens through vibration.<br> A True<br> B False
Genrish500 [490]

Answer:

True

Explanation:

Sound is all about vibrations.

The source of a sound vibrates, bumping into nearby air molecules which in turn bump into their neighbor's, and so forth.

4 0
3 years ago
Read 2 more answers
An artillery shell is fired with an initial velocity of 300 m/s at 55.0° above the horizontal. It explodes on a mountainside 42.
GuDViN [60]

Answer:

x=7227

y=1678

(7227,1678)

Explanation:

Ok, check the picture I attached you, because of the problem don't give us aditional information, let's asume that the projectile is fired from an initial position x=0 and y=0. Now let's use projectile motion equations, but firs let's find the initial velocity components in x-axis and y-axis:

v_ox=v_o*cos(\theta_o)=300*cos(55)=172.0729309m/s

v_oy=v_o*sin(\theta_o)=300*sin(55)=245.7456133m/s

Now, let's find the x coordinate with this equation:

x-x_o=x-0=x=v_ox*t=172.0729309*42=7227.063098m

Finally asumming a gravity constant g=9.8, let's find the y coordinate with the next equation:

y-y_o=y-0=y=v_oy*t-\frac{1}{2}*g*t^{2} =(245.7456133*42)-\frac{42^{2} *9.8}{2}

y=10321.31576-8643.6=1677.71576m

8 0
3 years ago
A protein molecule in an electrophoresis gel has a negative charge.The exact charge depends on the pH of the solution, but 30 ex
Ad libitum [116K]

Answer:

The magnitude of the electric force on a protein with this charge is 7.2\times10^{-15}\ N

Explanation:

Given that,

Electric field = 1500 N/C

Charge = 30 e

We need to calculate the magnitude of the electric force on a protein with this charge

Using formula of electrostatic force

F=Eq

Where, F = force

E = electric field

q = charge

Put the value into the formula

F=1500\times30\times1.6\times10^{-19}

F=7.2\times10^{-15}\ N

Hence, The magnitude of the electric force on a protein with this charge is 7.2\times10^{-15}\ N

6 0
3 years ago
Which statement correctly describes the current in a circuit that is made up of any two resistors connected in series with a bat
jeyben [28]
The correct answer is
<span>C. The current in the battery and in each resistor is the same.

In fact, when resistors are connected in series, the current flowing through them is the same in each resistor. This is also equal to the current flowing in the circuit, so it is the same as the current flowing through the battery.</span>
6 0
4 years ago
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