Science check answers please and quickly

1. Jim is doing a physics experiment on the rate of cooling of solid objects in air. Which of the following is a variable that is not directly part of his experiment, but should be controlled in his experiment?
(Points : 1)
initial temperature to which he heats the solid object <--

temperature of the object with time

time interval over which he makes his measurement

ambient air temperature


Question 2. 2. In William Herschel's experiment that led to the discovery of infrared light, which of the following was his independent variable?
(Points : 1)
ambient temperature

color of light

time of day

amount of sunlight <--


Question 3. 3. Sara is doing a projectile motion experiment in which she rolls a ball off a table and measures how long the ball takes to hit the ground. Which of the following is a potential source of error in her investigations?
(Points : 1)
She rolls the ball from the same height.

She does the experiment with the same equipment, but on different days.

She uses different stopwatches to measure the time. <--

She uses the same ball.




Question 5. 5. What was the purpose of Herschel's extra thermometers in his infrared light experiments?
(Points : 1)
to provide backups in case the thermometer in the light broke

to control for changes in ambient temperature <--

to measure the effect of sunlight on heat

to identify the independent variable

  1. 👍 0
  2. 👎 0
  3. 👁 306
asked by Greg

Respond to this Question

First Name

Your Response

Similar Questions

  1. Science

    Heat flows in which direction? A)from solid objects to liquids B)from larger objects to smaller objects C)from warmer objects to cooler objects D)from more dense objects to less dense objects THANKS!

    asked by Bella help please on April 4, 2012
  2. Physic II

    Describe a situation in which you expect the initial cooling rate of a given object to be rapid and one in which the initial cooling rate might be slow. Note: the initial cooling rate is the change in temp. per second at first

    asked by fukirne on April 8, 2014
  3. Physics

    Four objects - a hoop, a solid cylinder, a solid sphere, and a thin, spherical shell - each has a mass of 4.59 kg and a radius of 0.252 m. (a) Find the moment of inertia for each object as it rotates about the axes shown in the

    asked by Ana on March 19, 2010
  4. math check please

    Newton’s law of cooling states that for a cooling substance with initial temperature T0 T 0 , the temperature T(t) T ( t ) after t minutes can be modeled by the equation T(t)=Ts+(T0−Ts)e−kt T ( t ) = T s + ( T 0 − T s ) e

    asked by satan on January 13, 2017
  5. Child development

    Infants' naïve theory of physics leads them to believe that A.gravity is not important so floating objects are not unusual. b.one object striking a second object does not affect the second object. c.objects cannot move through

    asked by Woody on October 9, 2015
  6. Child development

    Infants' naïve theory of physics leads them to believe that a.gravity is not important so floating objects are not unusual. b.one object striking a second object does not affect the second object. c.objects cannot move through

    asked by Woody on October 9, 2015
  7. Chemistry Help ????

    Experiment - Recrystallization of a solid Purpose in this experiment acetanilide will be recrystallized from water, which serves as the solvent.. Pre-Lab Questions.... Explain the purpose of the following in this experiment. a)

    asked by SARAH on November 23, 2008
  8. statistics

    17. All three‐digit numbers that can be formed using the digits 1, 2, 3, 4, and 5 without repeating the digits are (a) 50. (b) 60. (c) 15. (d) 71. 18. One of the counting rules used to determine the total number of possible

    asked by meri on June 30, 2015
  9. Noun

    physics: pls!!!!! i need ur help. in an experiment to verify Newton's law of cooling, the temperature of hot water in a calorimeter $T/^{o}C$ is plotted against time t/min. Which of the following is true about the graph? (a) The

    asked by basil on September 24, 2015
  10. Chemistry

    Experiment 1: A has .20 M, B has .20 M and the initial rate is 2.0*10^-4M/min Experiment 2: A has .20 M, B has .40 M, and the initial rate is 8.0*10^-4M/min Experiment 3: A has .40 M, B has .40 M, and the initial rate is

    asked by Finn on August 20, 2015

More Similar Questions