Part A
Find the magnitude of the
acceleration acm of the center of
mass of the spherical shell.
Take the free-fall acceleration to be
g = 9.80 m/s2 .
acm 3.62 m/s2
A Rolling Hollow Sphere
A hollow spherical shell with mass 2.25 kg rolls without
slipping

Exercise 1.7
Part A
How many years older will you be 1.60 billion seconds from now? (Assume a 365-day year.)
50.7 years
SubmitMy AnswersGive Up
Correct
Provide Feedback
General Physics I
Help
Close
Ch 01 HW
Exercise 1.7
previous 4 of 11 next
Rework for

Finding the Cross Product
The figure shows two vectors T and U
separated by an angle TU.
(Figure 1)
You are given that T =(3,1,0),
U =(2,4,0), and T U =V .
of 1
General Physics I
Help
Close
Ch 01 HW
Finding the Cross Product
previous 9 of 11 next
Rework

Part A
How many drops of water are in a 1.0 L bottle?
(Hint: Start by estimating the diameter of a
drop of water.)
10 drops of water
Exercise 1.24
You are using water to dilute small amounts of
chemicals in the laboratory, drop by drop.
102 drops of
water

Part A
A = 4.00 i^ 6.30 j^
Enter your answers numerically separated by a comma.
Express your answers using three significant figures.
Ax, Ay 4.00,-6.30
=
SubmitMy AnswersGive Up
Correct
Exercise 1.40
In each case, find the x- and ycomponents of vector A .

Part A
Problem 1.81
While following a treasure map, you start at an old oak
tree. You first walk 825 m directly south, then turn and
walk 1.25 km at 30.0 west of north, and finally walk
1.00 km at 40.0 north of east, where you find the
treasure: a biograp

Exercise 1.12
Part A
The recommended daily allowance (RDA) of the trace metal magnesium is 410 mg/day for
males. Express this quantity in g/day.
Express your answer using two significant figures.
4.1105
g/day
SubmitMy AnswersGive Up
Correct
Part B
For adu

Tracking a Plane
A radar station, located at the origin of xz
plane, as shown in the figure (Figure 1) ,
detects an airplane coming straight at the
station from the east. At first observation Part A
(point A), the position of the airplane
relative to the

Significant Figures Conceptual Question
In the parts that follow select whether the number presented in statement A is greater than, less
than, or equal to the number presented in statement B. Be sure to follow all of the rules
concerning significant figu

Part A
A B = 3,-5,-4
SubmitMy AnswersGive Up
Correct
Part B
Vector Addition and Subtraction
In general it is best to conceptualize vectors as arrows in space, B C = -5,4,0
and then to make calculations with them using their components. SubmitMy AnswersGi