# Science

All new and solved questions in Science category

##### A piece of wood that measures 3.0 cm by 4.0 cm by 5.0 cm has a mass of 90
a piece of wood that measures 3.0 cm by 4.0 cm by 5.0 cm has a mass of 90.og. what is the density of the wood? would the piece of wood float in water? remember the density of water is 1.00g/ml...
##### The separation of the foci of an ellipse that describes a planet's orbit derermines A eccentricity of the orbit B period of the orbit C size of the orbit D all of the above
the separation of the foci of an ellipse that describes a planet's orbit derermines A eccentricity of the orbit B period of the orbit C size of the orbit D all of the above. I think it is A because the closer the foci, the more circular versus elliptical the orbit is. Size is determined by the ...
##### Explain why every substance has a characteristic density, but no substance has a characteristic mass
Explain why every substance has a characteristic density, but no substance has a characteristic mass....
##### Animals can be classified by whether or not they a -------
animals can be classified by whether or not they a -------....
##### How would you make 500.0mL of a 0.200M NaOH solution from a 15.0 M stock NaOH solution
how would you make 500.0mL of a 0.200M NaOH solution from a 15.0 M stock NaOH solution?? I assume that you want the volumes rather than the mechanics of carrying it out? a) How many moles do you need in the 500 ml to have 0.200 M? b) What volume of 15.0 M would contain the number of moles from a)...
##### How often do you water basil
How often do you water basil?...
##### Caleb is holding a metal block in his hand
caleb is holding a metal block in his hand.what could he do to decrease the thermal energy?...
##### What is the behaviour among particles that affects the solubility of a material
What is the behaviour among particles that affects the solubility of a material?...
##### On a large-scale topographic map, how are airports and major highways treated differently than houses and small features
on a large-scale topographic map, how are airports and major highways treated differently than houses and small features? someone help me with this question?...
##### A ball moving eastward with a velocy of 15m/sec bounces off a wall with a velocity of 12m/sec in the opposite direction
A ball moving eastward with a velocy of 15m/sec bounces off a wall with a velocity of 12m/sec in the opposite direction.If the mass of the ball 200g.Calculate the change in the ball's momentum...
##### IF YOU DROP DILUTE HYDROCHLORIC ACID ON THE MINERAL ARAGONITE(MINERAL), IT BUBBLES
IF YOU DROP DILUTE HYDROCHLORIC ACID ON THE MINERAL ARAGONITE(MINERAL), IT BUBBLES. WHAT MINERAL GROUP DO YOU THINK ARAGONITE(MINERAL) BELONGS TO AND WHY?...
##### What is a standard for comparison, a sample you are not experimenting on
What is a standard for comparison, a sample you are not experimenting on?...
##### I grew in a cave,but i,m not alive, I began as water and minerals, but now I am solid, I grow upwards, but I never see the sky
I grew in a cave,but i,m not alive, I began as water and minerals, but now I am solid, I grow upwards, but I never see the sky...
##### Melting point of gold is 1064*C What is the freezing point of gold
Melting point of gold is 1064*C What is the freezing point of gold?...
##### Electromagnetic radiation with a wavelength of 700 nm would be: a)x-rays b)red light c)violet light d)ultraviolet light e)microwaves I thought it would be visible light but that's not an option
Electromagnetic radiation with a wavelength of 700 nm would be: a)x-rays b)red light c)violet light d)ultraviolet light e)microwaves I thought it would be visible light but that's not an option....
##### Which group of plants have nitrogen fixing bacteria in their root nodules
Which group of plants have nitrogen fixing bacteria in their root nodules? A. Grass. B. Phytoplankton. C. Legumes. D. Seaweeds....