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Physical Sciences
Page 6
Questions (453)
The graph shows distance versus time for an object. Which of the following correctly describes the object's motion? a The object
1 answer
asked anonymously
56 views
Which of the following gases has the highest average speed at 400K?
NO2 OF2 SO2 SF6
4 answers
asked by
Kanye
1,388 views
a 25.0 sample of nitrogen has a volume of 50.0L and a pressure of 630. mmHg. what is the temperature of the gas?
3 answers
asked by
Anonymous
1,357 views
When determining the specific heat from a given metal in a calorimeter the mass of the water remains constant, but the mass of
4 answers
asked by
Anonymous
1,354 views
How many copper atoms are in a pure copper statue with a mass of 139kg{\rm kg}
4 answers
asked by
Ana
1,296 views
what physical property do all the following have in common:glass,water,carbon dioxide,plastic wrap,air?
mass density, specific
2 answers
asked by
derick
1,242 views
One of the fastest recorded pitches major-league baseball, thrown by Nolan Ryan in 1974, was clocked at 100.8 mi/hr. If a pitch
1 answer
asked by
Megan
1,234 views
The average air pressure at sea-level will support the column of mercury in a mercury barometer to a height of 760 mm (29.92
1 answer
asked by
Anonymous
1,189 views
PLEASE I HAVE NO IDEA WHERE TO START
A quarterback is asked to throw a football to a receiver that is 32.1 m away. What is the
3 answers
asked by
tommy
1,192 views
50ml of water at 49.6 C were mixed with 50ml of water at 25.1 C in a calorimeter also at 25.1 C. The final temperature was 30.1
2 answers
asked by
fufi
1,169 views
Earth's mean radius and mass are 6,371 km and 5.97 x 1024 kg, respectively. Show that the acceleration of gravity at the surface
3 answers
asked by
vv
1,128 views
Explain why the potential energy increases when ice starts to melt an becomes liquid water.
The particles form a more ordered
6 answers
asked by
JennyKen
56 views
A student wants to show the transfer of heat energy without matter. Which investigation design would best help the student?
a an
1 answer
asked by
Nas guap
92 views
How are seismic waves and sound waves similar?(1 point)
Responses They can cause vibrations or motions in the matter with which
1 answer
asked by
SIC
38 views
what is the heat capacity of a gold ring that has a mass of 5.00g?
2 answers
asked by
miles
1,094 views
A sealed cylinder of gas contains nitrogen gas at 1.00 10e3 kPa pressure and a temperature of 25°C. The cylinder is left in the
2 answers
asked by
Dontae
1,111 views
When you go out to your car one cold winter morning you discover a 0.54 cm thick layer of ice on the windshield, which has an
4 answers
asked by
Ryan
1,072 views
Aluminum metal crystallizes in a face centered cubic lattice. If each Al atom has a radius of 1.43 A what is the density of
3 answers
asked by
Gada
1,050 views
How much heat energy is needed to transform 125g of ice at zero degrees celsius to warm water at 80 degrees celsius?
3 answers
asked by
John Goodroe
1,041 views
Can someone check to see if my answers look ok.
For the following crystals, explain how their melting points are related to the
1 answer
asked by
Nancy
1,048 views
Luis created a clay model of earth and the sun to show how earth rotates, Luis wants to use a toothpick to represent earths axis
4 answers
asked by
Unicorn
1,021 views
the molar heat capacity of water at 25 degrees celsius is 75.29JK/mol. an exothermic reaction with -5.00kJ proceeded to
2 answers
asked by
ayanda
1,015 views
According to the kinetic theory, gases consist of particles that
A. occupy considerable volume. B. are relatively close together.
3 answers
asked by
Ciaria
1,012 views
A student tries to pick up a metal object with a magnet, but the magnet is too far away. What can he change in order to
1 answer
asked anonymously
47 views
a student wraps copper wire around an iron nail. Then she connects the ends of the wire to a battery, making an electromagnet.
1 answer
asked anonymously
86 views
relate dark matter to the development of the universe after the big bang. in 3-5 sentences speculate on how the development of
1 answer
asked anonymously
37 views
A kayaker paddles upstream for 1.5 hours then turns his kayak around and returns to his tent in 1 hour. He travels 3 miles each
2 answers
asked by
John
1,004 views
Some hypothetical metal has the simple cubic crystal structure. If its atomic weight is 70.4 g/mol and the atomic radius is
1 answer
asked by
Cam
1,004 views
The energy versus bond length for the average bond in two solids, A and B, is shown below. Atoms in the two solids have the same
3 answers
asked by
Chemgam
977 views
Two thin strips of metal are bolted together at one end and have the same temperature. One is steel, and the other is aluminum.
1 answer
asked by
Heather
983 views
30 grams of a metal at 100 degrees Celsius is placed in a calorimeter containing 100 mL of water at 21 degrees Celsius. After a
3 answers
asked by
Seyph
994 views
a beaker contains 500g of water at a temperature of 80 C. How much ice at a temperature -20 C must be dropped in the water so
2 answers
asked by
Forhad
973 views
Earth’s radius is approximately 3,959 miles, while Jupiter’s radius is approximately 4.3441×10^4 miles. How much bigger is
2 answers
asked anonymously
28 views
The voltage generated by the zinc concentration cell described by,
Zn(s)|Zn2 (aq, 0.100 M)||Zn2 (aq, ? M)|Zn(s) is 24.0 mV at 25
2 answers
asked by
Julia
954 views
If oxygen, Carbon dioxide, and xenon gases are heated at 500k with a probable particle speed of 1094 and an average particle
4 answers
asked by
Carolyn
939 views
Grains of fine California beach sand are approximately spheres with an average radius of 50 μm and are made of silicon dioxide,
2 answers
asked by
SARA
956 views
38.0kg mass of copper is melted to be cast into a graphite mold at a copper pipe foundtry. If the solid copper starts off at the
2 answers
asked by
Jacob
913 views
A severe thunderstorm dumped 2.0 in of rain in 30 min on a town of area 50 km^2. What mass of water (in kg) fell on the town?
1 answer
asked by
sagara
897 views
The solubility of gases in water decreases with increasing water temperature
3 answers
asked by
Anonymous
852 views
Calculate the total amount of heat that must be added to convert 15.7g of ice at its melting point to steam at 100.0°C
2 answers
asked by
Brian
847 views
how is radiation different from convection and conduction?
Radiation can travel through solids is what i'm thinking.
2 answers
asked by
ski
845 views
You mix oil and vinegar for a salad dressing. After a few minutes, the oil has separated and is floating. Infer which has the
5 answers
asked by
Lilly
812 views
The momentum of a tennis ball and football is the same.Do they have the same kinetic energy? Justify your answer
2 answers
asked by
Angelina
795 views
Among the following electrons, which has highest energy? a. n = 3, l = 2, m = 0, s = + 1/2 b. n = 4, l = 0. m= 0 , s = - 1/2
Ans
2 answers
asked by
Nabsha
778 views
What are the magnitude and direction of the electric field at a point midway between a -8.0 microCoulomb and a +7.0microCoulomb
1 answer
asked by
Grace
737 views
1.In which temperature of water did the food coloring diffuse faster?
2.Using your knowledge of the motion of molecules, explain
2 answers
asked by
ny
748 views
a Baseball player throws a ball for the outfield horizontally such that it is released 1.5 meters above the ground. if the ball
1 answer
asked by
Kat
765 views
If a hair dryer is rated at 800W, how much energy does it require in 3 min?
2 answers
asked by
Julie
716 views
to what temperature must a given mass of nitrogen at zero degree be heated so that both it volume and pressure will be doubled
4 answers
asked by
YUZARSIF
701 views
You head downstream on a river in a canoe. You can paddle at 5.2 km/h and the river is flowing at 2.2 km/h. How far downstream
3 answers
asked by
Eddie
720 views
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