Question

**Vernier calipers read to one tenth of a millimeter.
Which reading is given to this**

**precision?**

A) 3.3 cm

B) 3.31 cm

C) 3.310 cm

D) 3.312 cm

**Newton’s third law involves two quantities which are
equal in size and opposite in**

**direction. What is the unit for these two
quantities?**

A) J

B) m / s 2

C) N

D) W

Answer #1

-According to Newton’s First Law, which of the following
statements is true?
a) If an object is in motion, then a force is acting on it.
b) A force is necessary to change the motion of an object.
c) If an object is stationary, then no forces are acting on
it.
d) An object in motion must have an acceleration.
-If an object is in motion, can its acceleration be zero?
-If an object’s acceleration is zero, does that mean...

Part 2 (This problem involves concepts from Section 13.2 and
13.3 of the text, which are part of this week’s assigned reading.)
Suppose you have two objects in contact, so they can exchange
thermal energy, but isolated from the rest of the world. Let the
initial temperature of one of them (the hot one) be Th, and its
heat capacity Ch, and let the initial temperature of the other one
(the cold one) be Tc, and its heat capacity Cc....

17. Action-reaction forces in third Newton’s law:
a. Always act on the same object.
b. Sometimes act of the same object.
c. Always act on different objects.
d. May or may not be antiparallel to each other.
18. If force exerted by horse on a cart is equal and opposite to
the force exerted by cart on a horse, how does horse manage to move
a cart?
a. Horse has bigger mass than a cart.
b. Horse still exerts greater...

Which of the following is a FALSE statement of the correlation
coefficient?
Select one:
a. The closer the value of the correlation coefficient is to
negative one, the weaker the relationship between the returns on
the two securities.
b. The closer the absolute value of the correlation
coefficient is to zero, the weaker the relationship between the
returns on the two securities.
c. Positive correlation coefficients imply that the returns on
Security A tend to move in the same direction...

1. Which describes the vector calculation of the Biot-Savart
law?
a. The length element in the direction of the
current is crossed into a vector directed from that element toward
the point of measurement.
b. The length element in the direction of the current
is dotted into a vector directed from that element toward the point
of measurement.
c. The magnetic field vector is crossed into a vector
directed from a current-length element toward the point of...

1. Usain Bolt sprints along the track, with his feet pushing
down and behind him. Therefore the track actually pushes Usain Bolt
along the track. Group of answer choices True or False
2.You study two objects in motion, Object J and Object S. Each
object has its own velocity graph, with same time and velocity
scales. The slope of each graph is positive, upward and to the
right ⁄ but Object J's tilt angle is only 10º and Object
S's tilt...

1) A solar collector heats the water in the water tank
of a home. Which energy transformation equation best describes this
situation?
a) radiant --> thermal
b) radiant --> electrical
c) radiant --> gravitational -->
electrical
d) radiant --> gravitational -->
thermal
2) In which case is negative work done?
a) The work done by Earth on a ball as the ball, which
was initially at rest, falls 3.0 m down towards Earth.
b) A eastward force is applied to...

QUESTION 3
You are given ONE (1) sample of blood and asked to identify its
blood type. You set up the experiment, and get the following
results: No change in the plate well marked “A” and clumping in the
plate wells marked “B” and “Rh.” What is the blood type?
a. Type A-
b. Type B+
c. Type O-
d. Type Rh+
1 points
QUESTION 4
Which explanation best describes the results in the previous
question?
a. Antibody A...

A researcher hypothesizes that caffeine will affect the speed
with which people read. To test this, the researcher randomly
assigns 8 people into one of two groups: 50mg Caffeine (n1=4) or no
Caffeine (n2=4). An hour after the treatment, the 8 participants in
the study are asked to read from a book for 1 minute; the
researcher counts the number of words each participant finished
reading. The following are the data for each group:
50mg Caffeine (group 1)
450 400...

A different researcher is interested that caffeine will affect
the speed with which people read but design a study with four
conditions -- a placebo group (a group that gets a pill that looks
like the caffeine group does, but it does not contain caffeine), a
no-drug condition, a 50mg caffeine condition, and a 100mg caffeine
condition. The researcher randomly assigns 16 people into one of
the four groups. An hour after the treatment, the 16 participants
in the study...

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