1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
GaryK [48]
3 years ago
14

Which TWO statements about the substances in the experiment are true?

Physics
2 answers:
nataly862011 [7]3 years ago
4 0

Answer:

A and B are correct both are correct

iris [78.8K]3 years ago
4 0

Answer:

answer A and B

A. Quartz is harder than chalk.

B. Water has a higher surface tension than salty water.

Explanation:

did the test !

You might be interested in
Please help me thank you !!!!
Fantom [35]

Answer:

<em>UP</em>

Explanation:

heat flows from higher level to lower level

( higher concentration to lower concentration )

and since temperature in above block is less than the lower block, the heat will flow from lower block to higher block .

( Up )

5 0
3 years ago
A small convex mirror is placed 60 cm from the pole and on the axis of a large concave mirror of radius of curvature 200 cm. The
umka2103 [35]

Answer:

Calculate 'R' of convex mirror and height of the real image

the radius of the convex mirror is 48cm

Explanation:

Distance between convex and concave mirror is =60cm

Radius of the concave mirror (R) = 200cm

For the concave mirror, u = ∞

V = {R}/{2}=100cm

The object for the convex mirror and the final image is on the pole of the concave mirror, and distance between convex and concave mirror is 60cm

u_1=60-100 =-40cm

Object will be behind the convex mirror

1/f=1/40+1/60  

f=24cms

the radius of the convex mirror is 48cm

6 0
3 years ago
Help please and thank you
nata0808 [166]

Answer:

creo que es la opcion numero 4.

8 0
2 years ago
Light passes through a 0.15 mm-wide slit and forms a diffraction pattern on a screen 1.25 m behind the slit. The width of the ce
Elena L [17]

Answer:

The value is  \lambda =  900 \ nm

Explanation:

From the question we are told that

   The width of the slit is  a =  0.15 \ mm = 0.00015 \  m

     The distance of the screen from the slit is D = 1.25 m

      The width of the central maximum is y =  0.75 \ cm  = 0.0075 \ m

Generally the width of the central maximum is mathematically represented as

         y   =  \frac{m *  D  *  \lambda}{a}

Here  m is the order of the fringe and given that we are considering the central maximum, the order will be  m =  1  because the with of the central maximum separate's the and first maxima

So

        \lambda     =     \frac{a y}{ m *  D }

=>     \lambda     =     \frac{ 0.000015 *  0.0075}{ 1  *  1.2 }

=>     \lambda     =   900 *10^{-9} \  m

=>      \lambda =  900 \ nm

6 0
3 years ago
If a statue is made out of wood, which of these words correctly describes the statue?
bonufazy [111]

Answer:

Od- Wooden

Explanation:

It would not make sense if it was non-wood because that make it no a wood base product, OC is not right because its not a a plant that produces wood as its structural tissue and thus has a hard stem.   An OA justT o take or get a supply of wood. so its Od

5 0
3 years ago
Other questions:
  • A block of mass M hangs in equilibrium. The rope which is fastened to the ceiling has a tension of 64 N and makes an angle Θ = 5
    14·1 answer
  • Calculate the density of a substance in pen- nyweights per peck that has a volume of 0.333 hogsheads and a mass of 49.62 kg.
    15·1 answer
  • True or false. A convection current is the circular motion of a fluid caused by the rising of heated fluid
    10·1 answer
  • Which of the following chemical reactions expressed correctly the role of the catalyst in the reaction?
    13·2 answers
  • A car is raised a certain distance in a service station lift and therefore has potential energy relative to the floor. If it wer
    6·1 answer
  • The half-life of plutonium 239 is 24,200 years. Assume that the decay rate is proportional to the amount. Determine the amount o
    7·1 answer
  • If sunlight shines straight onto a peacock feather, the feather appears bright blue when viewed from 15° on either side of the i
    14·1 answer
  • Volume of a Cube The volume V of a cube with sides of length x in. is changing with respect to time. At a certain instant of tim
    14·1 answer
  • A 60-kg cheetah reaches a speed of 30 m/s as it chases its prey.What is the kinetic energy of the cheetah?
    10·2 answers
  • How are the current and resistance related when the voltage if a circuit is constant
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!