1,302 Answered Questions for the topic physical science
06/25/19
What is the age of the earth's oil?
Oil in the ground is found under the oceans and seas. It is made of dead fish. But from what period are those fish? I heard they are about 119 million years old. But fish exist much longer than...
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What is the difference between subvolcanic rocks and plutonic rocks?
I'm studying Plutonic (Intrusive) rocks and i really dont understand the difference between PLutonic Rocks that form in Sills and Dikes from the so called subvolcanic rocks, also known as a...
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06/25/19
What would change if our earth lacks mountains?
I just asked myself what is the role of the mountains on our planet earth? Well there's a well known role for the climate and weather.
But is there a kind of physical or geological role? What...
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Physical Science Geology
06/25/19
Why does gold and other metals conglomerate?
When gold, or some other metals, such as copper, are found, they are often found in large nuggets. But, from what I understand, gold is produced in quite stochastic stellar processes. As such,...
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06/25/19
What is the current status of geophysical global cooling theory?
Plate tectonics effectively rubbished the theory of geophysical global cooling as a means of explaining many surface features on the Earth. However, [this...
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06/25/19
What are the challenges in predicting lithology directly from acoustic impedance?
Seismic inversion methods help to visualize the subsurface layers of the earth in terms of petrophysical properties (e.g. impedance). Still some geophysicists use the final inverted impedance model...
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06/25/19
Which geological processes will destroy plastic?
The geological record at the end of the Anthropocene will undoubtedly contain large volumes of plastic. However, some geological processes will completely destroy plastic (e.g. magmatic or chemical...
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Physical Science Science
06/24/19
help me i don't understand
how much force is required (in newtons) to accelerate a 10-kg bicycle, along with its 60-kg rider, at 2.5 m/s2
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Physical Science
06/20/19
The elastic potential energy
A spring with 450 J of EPE has a spring constant of 100 N/m. How far must the spring be stretched?
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Physical Science Science
06/20/19
please help me with this
the pitch of a sound is determined by its wavelength and speed together , or its _____ alone.
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Physical Science Science
06/19/19
i don't understand please help
The following table shows the speed of sound in four different materials. one is gas, two are liquids, and one is solid. which one is the solid?
Material
A
B
C
D
Speed of sound...
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Physical Science
06/19/19
what happens to potential energy that is not completely converted to kinetic energy?
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Physical Science
06/18/19
spaceship 1 and spaceship 2 have equal masses of 300kg. spaceship 1 has an initial momentum magnitude of 9000 kg-m/s. what is its speed?
a) 8700 m/sb) 300 m/sc) 30 m/sd) 3 m/s
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Physical Science
06/18/19
if a scooter has a mass of 20 kg and a velocity of 18 m/s north, what is the magnitude of it momentum?
a) 3,360 kg-m/sb)36 mphc)360 kg-m/sd)1.11 kg-m/s
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Physics and Images Problem
A 4.00-cm tall light bulb is placed a distance of 45.7 cm from a concave mirror having a focal length of 15.2 cm. Detemine the image distance and the image size.
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Physical Science
06/17/19
How much energy (in joules) is required to evaporate 0.0005 kg of liquid ammonia to vapor at the same temperature?
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Physical Science
06/14/19
Which contributes to the lack of evidence of the. Of heavy bombardment on Earth
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What are Newton's Laws of Motion?
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Physical Science
06/12/19
earth and space science
Ben bought two identical plants and placed them on opposite ends of his garden. After several days, he noticed that one grew taller than the other. Ben wants to conduct an experiment to see why one...
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Physics Question
A 900-kg car moving at 10 m/s takes a turn around a circle with a radius of 25.0 m. What is the acceleration and the net force acting upon the car.
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06/08/19
Conjugate acids and bases
What are conjugate acids and bases?
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Physical Science
06/06/19
boron has an atomic mass of 11 and atomic number of 5 so the number of neutrons must be
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How many mililiters are there in 4 liters?
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