Physics, 03.09.2020 18:01 idk4643

Use the data table and information below to answer the following questions. A scientist used a laboratory model to test the effect of radiation, or the sun, in heating land and water on Earth. To do this
experiment, 200 mL of water and dry sand were placed in to 2 separate 250-ml beakers. Each beaker was then placed under
the same lamp. Temperature readings were taken of each substance every 2 minutes for 8 minutes.
Use the data table to answer the following questions.
Starting Temp (°C)
6 min
Substance Heated
Water
Dry Sand
18
2 min
18.5
20
4 min
19.5
22
8 min
22
21
24
18
26
Is this a controlled experiment? Explain.

Answers: 2

Show answers

Another question on Physics

Physics, 22.06.2019 18:00

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c

Answers: 1

Answer

Physics, 22.06.2019 21:10

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2

Answers: 2

Answer

Physics, 23.06.2019 02:00

How does the formation of intrusive and extrusive igneous rocks differ?

Answers: 3

Answer

Physics, 23.06.2019 09:20

How does an increase in temperature generally affect the rate of a reaction?

Answers: 3

Answer

You know the right answer?

Use the data table and information below to answer the following questions. A scientist used a labo...