A farmer owned a square field measuring exactly 2261 yards on
each side. 1898 yards from...
A farmer owned a square field measuring exactly 2261 yards on
each side. 1898 yards from one corner and 1009 yards from an
adjacent corner stood a beech tree. A neighbor offered to purchase
a triangular portion of the field stipulating that a fence should
be erected in a straight line from one side of the field to an
adjacent side so that the beech tree was part of the fence. The
farmer accepted the offer but made sure that the triangular portion
was of minimum area. What was the area of the field that the
neighbor received, and how long was the fence?
A square coil of wire of side 3.00 cm is placed in a uniform magnetic
field of magnitude 1.75 T
directed into the page as in the figure shown below. The coil has
38.0 turns and a resistance of
0.780 Ω. If the coil is rotated through an angle of
90.0° about the horizontal axis shown in 0.335 s, find the
following.
(a) the magnitude of the average emf induced in
the coil during this rotation
(b) the average current...
From a rectangular sheet measuring 250?? by 150??, equal squares
of side ? are cut from each of the four corners. The remaining
flaps are then folded upwards to form an open box
Find the value of x that gives the maximum volume and give your
answer to 2 decimal places. Xmax=
Calculate the volume to the nearest ??3. Vmax=
3. A cube of Brass (B = 70 GPa) measuring 1.0 m on each side is
submerged under water. It is lowerd to a depth where a force "F" is
acting perpendicularly into each side, reduces the cube's volume by
1.8 %.
(a) Calculate the size of this force.
2.A researcher examines a piece of fresh human cartilage, with
an area of 1.9 cm2. She observes that when subjected to a tensile
force of 194 N it stretches by 4.8...
The drawing shows a square, each side of which has a length of L
= 0.250 m. Two different positive charges q1 and q2 are fixed at
the corners of the square. Find the electric potential energy of a
third charge q3 = -3.00 x 10-9 C placed at corner A and then at
corner B.
Four charged rods form the side of a square in the horizontal
(xy) plane. Each rod has a length 25.2 cm and each carries a
uniformly distributed positive charge Q. A small sphere, which can
be considered to be a point charge of mass 3.29 ✕ 10-4 g and
electric charge +2.42 ✕ 10-12 C is in equilibrium at a location z =
21.5 cm above the center of the square. Find the value of Q. HINT:
Don't ignore gravity...
George wants to use square pavers that are 6 inches on each side
to completely surround his flower garden. The garden is 12 feet
long and 3 feet wide. How many pavers should George buy ? show
work
Two squares each 17cm by 17cm are drawn randomly inside a square
measuring 1m by 1m.
The edges of the two smaller squares are both
parallel/perpendicular to the edges of the large square.
What is the exact probability the two smaller squares overlap (or
touch)?
A square coil, 4.0 cm meters on a side, is made from a
3.0 meter length of wire. The resistance of the wire is 0.25
ohms.
a) Determine the approximate number of loops in the wire
(round to nearest whole number) and the area of each loop (in
meters!) to 3 significant figures. Use these numbers in the parts
below.
A horizontal wire sits on the table 8.5 cm away from the
center of the coil, carrying a steady 0.40...
A 50 kg uniform square sign, 2.00 m on a side,
is hung from a 3.00 m rod of negligible mass. A cable is
attached to the end of the rod and to a point on the wall 4.00
m above the point where the rod is fixed to the wall. What
is the tension in the cable?
Tries 0/10
What is the horizontal component of the force exerted by the
wall on the rod?
Tries 0/10
What is the...
A 10.0-cm side square loop is fashioned from a single 4.00-m
long, 100-g wire. One side of the loop is attached to a horizontal,
frictionless axle. The loop is suspended in a region with a uniform
10.0-mT magnetic field oriented vertically. (a) What angle does the
loop make with the vertical when it carries a current of 3.40 A?
(b) What magnetic torque acts on the loop?