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Physics
Page 34
Questions (147,481)
A 156 g hockey puck is initially travelling with a speed of 18 m/s. The force of friction acting on the puck is 0.30 N. If no
5 answers
asked by
sandra
1,837 views
A person reaches a maximum height of 65cm when jumping straight up from a crouched position. During the jump itself, the
4 answers
asked by
Ash
5,477 views
Melting Snowball: A spherical snowball melts at a rate proportional to its surface area. Show that the rate of change of the
5 answers
asked by
Eli
4,693 views
A board that is 20 cm wide, 5 cm thick, and 3 m long has a density of 350 kg/m^3. The board is floating partially submerged in
4 answers
asked by
David
7,864 views
At an instant when a soccer ball is in contact with the foot of a player kicking it, the horizontal or x component of the ball's
5 answers
asked by
Natasha
9,907 views
A bus traveling at +30 km/hr accelerates at a constant +3.5 m/s2 for 6.8 s. What is its final velocity in km/hr?
5 answers
asked by
vijay parmar
1,836 views
On Mars, the acceleration due to gravity is 3.71 m/s2. How far would a rock fall in 3 s if you dropped it on Mars?
4 answers
asked by
Pete
6,347 views
An initially stationary 15.0-kg crate of cheese wheels is pulled via a cable a distance d= 5.70m up a frictionless ramp to a
5 answers
asked by
rosie
5,113 views
How many watts of power do you expend when you exert a force of 0.50N that moves a book 2.1m in a time interval of 1.1s ?
Express
4 answers
asked by
Anonymous
4,437 views
A body of mass 2kg moving with velocity of 5m/s collides with a stationary body of mas 500g. if the two bodies move together
9 answers
asked by
Ritanoe
4,461 views
A heat engine operating between 100 degree celcius and 700 degree celcius has an efficiency equal to 40% of the maximum
11 answers
asked by
MZAOEM
2,726 views
A 10.0-kg cylinder rolls without slipping on a rough surface. At the instant its center of amss has a speed of 10m/s, determine
7 answers
asked by
cyndi
7,193 views
A 0.006-kg bullet traveling horizontally with a speed of 1.00 103 m/s enters an 21.1-kg door, imbedding itself 10.4 cm from the
7 answers
asked by
Ana
8,359 views
A stationary 2.0 kg object is located on a table near the surface of the earth. The coefficient static friction between the
5 answers
asked by
pam
3,504 views
A balloon is rising at 3.6 m/s at same time is blown by wind for 5.4 m/s from east. Find the actual velocity and direction of
5 answers
asked by
noona
3,998 views
1.Two trolleys X and Y with momenta 20 Ns and 12 Ns respectively travel along a straight line in opposite directions before
4 answers
asked by
ROSELINE
2,165 views
A simple pendulum is made from a 0.65m long string and a small ball attached to its free end. The ball is pulled to one side
5 answers
asked by
Anonymous
7,514 views
An object whose moment of inertia is 2.5 kg · m^2 experiences the torque shown in the figure below. What is the object's
4 answers
asked by
HELP.
5,381 views
The force needed to keep a car from skidding on a curve varies inversely as the radius of the curve and jointly as the weight of
4 answers
asked by
Lisa
5,740 views
a ball is thrown horizontally from the top of a building 35m. high. the ball strikes the ground at a point 80m from the base of
5 answers
asked by
Anonymous
5,238 views
A sample of 62.3 CM^3 of argon gas at 18°c was contained at a pressure of 155 kPa in a j-shaped tube with Mercury. Later the
5 answers
asked by
Mwansa
1,332 views
The period of motion of an object-spring system is T = 0.474 s when an object of mass m = 296 g is attached to the spring.
(a)
4 answers
asked by
Ame
7,171 views
Two equal charges are separated by 3.7 x 10^-10 m. The force between the charges has a magnitude of 2.37 x 10^-3 N. What is the
5 answers
asked by
aichan
6,654 views
A metal block of mass m is attached to the ceiling by a spring. Connected to the bottom of this block is a string that supports
4 answers
asked by
kam
3,436 views
Jamal pulls a 150-N sled up a 28.0 degrees slope at constant speed by a force of 100 N. Near the top of the hill he releases the
5 answers
asked by
Meme
6,129 views
A room has a volume of 120 m^3. An air-conditioning system is used to replace the air in the room every twenty minutes, using
4 answers
asked by
ALan
4,977 views
A 2.1kg brass ball is transported to the Moon.
a)What is the mass of the brass ball on the earth and on the moon? Wouldn't it be
4 answers
asked by
Andrea
4,102 views
A bus travels 80 km due south in 2 hours it then travels 100 km due west in 3 hours what is the average velocity of the bus
5 answers
asked by
Nati
1,566 views
A 75 kg box slides down a 25.0 degree ramp with an acceleration of 3.60 m/s^2.
Find coefficient between the box and the ramp.
7 answers
asked by
Terrence Eko
15,245 views
A volleyball is served at an angle of 35 degrees with an initial speed of 5 m/s. What is the maximum height reached by the ball?
5 answers
asked by
Please help
5,645 views
If a sprinter accelerates from rest at a constant rate of 2.0m/s/s how fast will they be running after 4.0s?
6 answers
asked by
phinigan
1,997 views
the speed boat has a acceleration of 2.0 m/s2 if the initial velocity of the boat is 6.0 m/s2. find the boat displacement after
5 answers
asked by
junrex
1,060 views
A body vibrate in s.h.m with a frequency of 50Hz and a mplitude of 4cm.find the period,the acceleration at the middle and at the
7 answers
asked by
Anonymous
2,120 views
A particle of mass m, initially at rest at x = 0, is accelerated by a force that increases in time as F=Ct^2.
a) Determine its
4 answers
asked by
E
4,478 views
A truck driver slams on the brakes and skids to a stop through a displacement of delta x.
(a) IF the truck has twice the mass, by
4 answers
asked by
John
6,104 views
How much work is needed to stop a 20g bullet moving with a speed of 150ms-1
20 answers
asked by
Ehis
5,886 views
A skateboarder starts at point A in the figure(Figure 1) and rises to a height of 2.64 m above the top of the ramp at point B.
Wh
4 answers
asked by
RoCu
4,182 views
A child exerts a tangential 43.5-N force on the rim of a disk-shaped merry-go-round with a radius of 2.41 m. If the
4 answers
asked by
Sarah
3,432 views
Calculate the linear expansivity of a brass of length 120m that assume a new length of 120.05m when heated through a temperature
12 answers
asked by
Living stone model college
4,322 views
What is the specific heat in J/g Celsius for a metal sample with a mass 95.6 g which absorbs 841 J of energy when it's
5 answers
asked by
Mike
5,216 views
A ball is thrown 12 meters in the air (so that the initial up-and-down distance is 24 meters). The ball rebounds 95% of the
5 answers
asked by
Anonymous
4,454 views
A 0.02 kg ball moving to the right at 0.25 m/s makes an elastic head-on collision with a 0.04 kg ball moving to the left at 0.15
7 answers
asked by
Please help
8,077 views
On the surface of the Moon, a 91.0-kg physics teacher weighs only 145.6 N. What is the value of the Moon’s gravitational field
4 answers
asked by
Diamind
2,033 views
to push a 25 kg crate up a 27 incline, a worker exerts a force of 120 N, parallel to the incline. As the crate slides 3.6 m, how
5 answers
asked by
amy
5,312 views
Ammeter 1 reads 0.20 A.
a. What should ammeter 3 indicate? b. What should ammeter 4 indicate? Given: RA = 22-OHM RB = 13-OHM A1 =
9 answers
asked by
Priscilla
1,980 views
Water flows at the rate of 2000 cibic cm per second into a verical cylindrical tank 120 cm in diameter and 6 m high. How fast is
5 answers
asked by
James
2,082 views
A body weighs 0.30N in air. 0.25N when fully immersed in water and 0.27N in a liquid. Calculate the relative density of the
5 answers
asked by
Rejoice
2,366 views
The maximum load a beam will support varies directly with the square of the diagonal of the beam's cross section.A beam with
5 answers
asked by
Keonn'a
4,225 views
a stone of mass 10kg falls from a height of 2m calculate the workdone
9 answers
asked by
ola
2,134 views
A proton moves in a constant electric field E
from point A to point B. The magnitude of the electric field is 4.2 x10^4 N/C; and
4 answers
asked by
Anonymous
6,696 views
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