1,302 Answered Questions for the topic physical science
03/18/19
Why are deserts mostly located on the western side of continents?
I read somewhere in a book that mostly desert found in the western part of a continent. So my question is that why is it so? I searched on the internet but I didn't get a reasonable answer for that.
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03/18/19
In what geological situations can I find gold?
I've heard that gold ore is often associated with quartz veins. What geological processes enable gold particles to naturally cluster together like this? What characteristics/properties should I...
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What's it like inside a natural gas cavern on Earth?
I suppose natural gas underground caverns on Earth have substantial volume and gas is in gaseous form there.
As such I wonder how it would look like inside such cavern (with artificial light of...
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When can taste be used to help identify rocks?
Taste can be used to distinguish halite (ordinary salt) from sylvite (which has some bitterness) and siltstone from mudstone (the latter has a creamy texture while the grains of the former can be...
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Why is the Earth's center still hot after millions of years?
Why didn't the center of the earth cool after millions or billions of years? What keeps it hot?
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Physical Science
03/16/19
what is the velocity of an 8 kg lead shot put if it ahs 484 j of enrgy
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03/15/19
Why One Side of Mountain Range is Lush?
I'm new to this site and certainly not someone with any real background in atmospheric science, so please forgive me if this question is a little stupid.
I recall learning in High School about...
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03/14/19
What do weather forecasters mean when they say "50% chance of rain"?
What do weather forecasters mean when they say "50% chance of rain"?
Even more confusing: weather report often says something like "30% chance of rain. >10mm", then the next day "70% chance of...
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03/14/19
How to tell if a single day of weather is an anomaly or due to climate change?
I am interested in understanding how to tell if a single day of 'abnormal' weather is due to climate change or not.
From my understanding, you would compare this day's weather to historical...
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03/14/19
How is the mass of the Earth determined?
According to textbook knowledge, the mass of the Earth is about $6 × 10^{24}\\,\\mathrm{kg}$. How is this number determined when one cannot just weight the Earth using regular scales?
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Why isn't Earth a perfect sphere?
In general, almost everyone describes Earth as an perfect sphere, but in reality it isn't a perfect sphere.
Is there any specific reason why Earth is not perfect sphere ?
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Physical Science
03/08/19
R2D2 rolls at 3.66 m/s for 90 seconds. How far does he go?
Physical Science
03/05/19
a freight train is moving at 13.5 m/s and accelerates at 2.50 m/s^2 and later is going at 39.0 m/s. how long is the train accelerating?
Physical Science
03/04/19
Math, Physical Science
a boat is traveling at 15 mph with the current, which is moving at 3 mph. what is the combined speed
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How to find acceleration due to gravity on jupiter
Jupiter is the largest planet in the solar system, with a mass of 1.90 x 1027kg and a radius of 7.18 x 107 m. A space probe of mass 185 kg is sent to the planet's surface to examine its atmosphere....
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Physical Science
03/02/19
A meteoroid changed velocity from 1.0 km/s to 1.8 km/s in 0.03 seconds. What is the acceleration of the meteoroid?
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Physical Science
03/02/19
A ball rolls down a ramp for 15 seconds. If the initial velocity of the ball was 0.8 m/sec and the final velocity was 7 m/sec, what was the acceleration of the ball ?
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Physical Science
03/02/19
What is the speed of a walking person in m/s if the person travels 1000 m in 20 minutes?
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Physical Science
03/02/19
How many seconds will it take for a satellite to travel 450 km at a rate of 120 m/s?
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Physical Science
03/02/19
. A trip to Cape Canaveral, Florida takes 10 hours. The distance is 816 km. Calculate the average speed.
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Physical Science
02/26/19
A spitball traveling across a classroom slows down by air resistance by 9 m/s in 2 seconds. What was the acceleration of the spitball?
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Speed of a cyclist ( distance, time, speed...)
A student rides her bike from her home to the store and back again. Her average speed to the store is 6.0 m/s, and coming back home it is 4.0 m/s. If the store is 840 m away from her home, what is...
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Physical Science
02/18/19
2 kg shell is fired from a tank with a force of 500 N. What is its acceleration?
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Physical Science Science
02/15/19
2 Kelly is sledding on a snowy hill in the winter. The energy the sled has as it slides down the hill is a form of
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