A ball of clay sinks when placed in water. The same piece of clay floats if it is made into the shape of a boat.Why does the clay float when made into the shape of a boat?
a. The clay is less dense when stretched into the shape of a boat.
b. The buoyant force is greater on the clay when it has a spherical shape.
c. The boat shape displaces a greater volume of water than the ball shape.
d. The weight of the clay boat is less than the weight of the clay ball.

Answers

Answer 1
Answer: The correct answer is definitely d. The weight of the clay boat is less than the weight of the clay ball.
In such situations, the point that we should take as a basis to resolve a question is weight. If the weight of clay is less than that of a clay ball, the clay will float.
Answer 2
Answer:

Answer:

c. The boat shape displaces a greater volume of water than the ball shape.

Explanation:


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Atoms become charged by gaining or losing _____. electrons protons neutrons

Answers

Electrons

It's not neutrons because neutrons don't have a charge (they're not positive or negative). They don't make a difference in the charge of an atom.

It's not protons because atoms don't lose or gain protons. They stay in the nucleus.

Electrons, however, are not in the nucleus. They fly crazy fast around the nucleus and can sometimes get sucked in by the nucleus of another atom. Electrons are also negatively charged. Gaining electrons makes an atom negatively charged. Losing electrons makes an atom positively charged.

the resistance of a wire of length 80cm and of uniform area of cross-section 0.025cmsq., is found to be 1.50 ohm. Calculate specific resistance of wire in SI units, Help please

Answers

Specific\ resistance\ =resistivity\n From\ formula\ on \ resistance:\ R= (pL)/(A)\ p-resistivity,\ L-length,\n A-area\ of\ cross\ section\n p= (R*A)/(L)= (1,5Ohm*0,025*10^(-4)m^2 )/(80* 10^(-2)m )=0,0003515625 Ohm*m

If a source of sound waves is rapidly approaching a person, the sound heard by the person appears to havea. a period higher than the original period.
b. a pitch lower than the original pitch.
c. an amplitude lower than the original amplitude.
d. a frequency higher than the original frequenc

Answers

Correct answer choice is:

D. A frequency higher than the original frequency.

Explanation:

This is a true case of Doppler's effect. The Doppler effect can be defined as the effect originated by a traveling source of waves in which there is a visible higher variation in pulse for observers towards what the source is progressing and a visible descending shift in rate for observers from what the source is dropping.

Answer:

DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD It is D

Explanation:

What is the formula for calculating density?A. density=mass/volume
B. density=mass*volume
C. density=volume/mass
D. density=mass + volume

Answers

Density can be determined by themass of an object and how much it takes up space (volume). It is represented bythe formula D = M/V where D is the density in kg/m^3 or lb/ft^3, M is the massin kg or lb and V is the volume in m^3 or ft^3. The answer would be A.  For example, you are given the mass of anobject of 40.5kg and a volume of 15m^3. Find its density. 

D = M/V
D = (40.5 kg)/ (15 m^3)
D = 27/10 or2.7 kg/m^3 

Answer:

My answer is A.

Explanation:

by using a density triangle, you would have to cover up the density and then it will show you, m over v. so that means you would have to divide.

If the current R1 is 2A, what is the current through R2?

Answers

If the 2 resistors are in series in the same circuit, then
the current is the same at every point in the circuit, so
it's the same through each resistor.

If they're in parallel, then it depends on the values (resistance)
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B. A generator

C. Mechanical energy

D. Electromagnetic energy

Answers

When you turn on a ceiling fan it turns the electrical energy that is running into the motor in the fan into motion. This motion is described as Mechanical energy. Therefore your answer would be C mechanical energy.