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Physics
Page 62
Questions (147,187)
A wind turbine has blades that sweep an area of 2000m2. It converts the power available in the
wind to electrical power with an
4 answers
asked by
Me
3,457 views
using a powerful air gun, a steel ball is shot vertically upward with a velocity of 80 m/s, followed by another shot after 5
4 answers
asked by
Astro
2,240 views
Vanessa can swim 3.0 m/s in still water. While trying to swim directly across a river from west to east, Vanessa is pulled by a
4 answers
asked by
Kailey
2,286 views
6. When a mass is attached to a spring, the period of oscillation is approximately 2.0 seconds.
When the mass attached to the
4 answers
asked by
Alex
1,129 views
A positive charge of 1.5x10^-8 C experiences a force of 0.025 N to the left in an electric field. What are the magnitude and
4 answers
asked by
george
1,866 views
a bob vibrates up and down on a vertical spring. if the period of the motion is two seconds, the frequency is: two seconds. i
4 answers
asked by
Rebecca
2,396 views
A surfing physicist paddles out beyond the breaking surf to a deep-water region where the ocean waves are sinusoidal (can obey a
4 answers
asked by
Adam
1,318 views
four identical metallic objects carry the following charges: 1.6, 6.2, -4.8, and -9.4 μC. the objects are brought
4 answers
asked by
kim
1,905 views
A plane progressive wave is represented by the equation: y= 0.1sin(200pi(t)-20pi(x/17) where y is the displacement in
4 answers
asked by
Edwin
1,909 views
Newton's Law of Gravitation says that the magnitude F of the force exerted by a body of mass m on a body of mass M is the
4 answers
asked by
Josh
2,675 views
A child's game consists of a block that
attaches to a table with a suction cup, a spring connected to that block, a ball, and a
5 answers
asked by
rachel
4,833 views
A cylinder is fitted with a piston, beneath which is a spring, as in the drawing. The cylinder is open at the top. Friction is
4 answers
asked by
Mary
11,157 views
Two crates, one with mass 4.00 kg and the other with mass 6.00 kg, sit on the frictionless surface of a frozen pond, connected
4 answers
asked by
Jae
889 views
What is the horizontal and vertical components of a cat's displacement when it has climbed 5 m directly up a tree?
3 answers
asked by
Ashkan
639 views
What is the value of a charge if moving it 0.692m opposite to the direction of a 3470N/C electric field to store 5.53J?
a) 434C
4 answers
asked by
anon
469 views
What force would be required for Steve to do as much work when he pushes at ϕ=40∘ as when he pushes in the ϕ=0 direction?
4 answers
asked by
Anonymous
1,916 views
In the diagram below, a water wave having a speed of 0.25 meter per second causes a cork
to move up and down 4.0 times in 8.0
4 answers
asked by
tom
2,023 views
A mass of 0.5kg is attached to a spring. The mass is then displaced from its equilibrium position by 5cm and released. Its speed
4 answers
asked by
Delailah
1,737 views
what is the critical angle for light passing from(n=1.54) to (n=1.33)
4 answers
asked by
Evans
2,465 views
Your friend doesn't believe you when you tell her that the acceleration due to gravity on earth is the same for both light and
4 answers
asked by
Morgan
585 views
A driver takes off with a speed of 10m/s from a 5m high diing board at 30° above the horizontal how much later doesh she strike
4 answers
asked by
Shaun
1,104 views
A ball is thrown upward with speed 12m/s from the top of a building. How much later must a second ball be dropped. From the same
4 answers
asked by
Majiri
1,714 views
Two resistors of resistances 3 ohms and 6 ohms are connected in a parallel across a 9 V battery. What is the equivalent
6 answers
asked by
Sam
4,277 views
A wheel mounted on a stationary axle starts at rest and is given the following angular acceleration: 9-12t where t is the time
4 answers
asked by
Happinessdelight
2,558 views
What is the density of a fuel of relative density 0.72
4 answers
asked by
ogu
780 views
A 400-gram package lying on a horizontal surface is attached to a horizontal string which passes over a smooth pulley. When a
4 answers
asked by
Rheabelle
4,416 views
A 12 kg wagon is being pulled at an angle of 38degrees above horizontal. What force is applied to
the wagon if it accelerates
4 answers
asked by
I need Physics help
1,179 views
A student throws a 140 g snowball at 7.5 m/s at the side of the schoolhouse, where it hits and sticks. What is the magnitude of
5 answers
asked by
Anonymous
5,098 views
A 25m ladder is leaning against a
vertical wall. The floor is s lightly slippery and the foot of the ladder slips away from the
4 answers
asked by
Miriama
1,136 views
Imagine that the asteroid A that has an escape velocity of 50m/s. If asteroid B has twice the mass and twice the radius it would
5 answers
asked by
Ellie
3,061 views
find the mass of a ball on a roof 30 meters high, if the ball's gravitational energy is 58.8 joules.
4 answers
asked by
Anonymous
2,767 views
The air pressure in a tire is 2.38 atm. What is this pressure in kilopascals?
4 answers
asked by
A.C.
2,567 views
If a 100-g mass was placed at the 25-cm mark, and a 20-g mass at the 10-cm mark, where should a 500-g mass be placed to balance
5 answers
asked by
Lila
5,206 views
Approaching a flashing pedestrian activated traffic light, a driver must slow down to a speed of 30km/h. If the cross walk is
4 answers
asked by
jason
2,299 views
when a parallel 5k ohm resistor and a 25k ohm resistor have a 10v supply, what is the total power loss?
4 answers
asked by
Anonymous
1,491 views
Turning a doorknob through 0.53 of a revolution requires 0.10 J of work. What is the torque required to turn the doorknob?
4 answers
asked by
stoic-rider77
639 views
1. A whistle you use to call your hunting dog has a frequency of 21 kHz, but your dog is ignoring it. You suspect the whistle
4 answers
asked by
Emmy Davidson
5,518 views
Two point charges have a total charge of 505 µC. When placed 1.10 m apart, the force each exerts on the other is 19.3 N and is
4 answers
asked by
Eric
1,702 views
it didn't let me put the link to image..
A tube of radius 5 cm is connected to tube of radius 1 cm as shown above. Water is
4 answers
asked by
Chris
1,223 views
A car travels 20km due north and then 35km in a direction 60 degree west of north. Find the magnitude and direction of the
5 answers
asked by
Chinedu
5,771 views
determine the distance from earths centre where the force of gravity acting on a space probe is only 11% of the force acting on
4 answers
asked by
Bobbie
739 views
5. The length of a simple pendulum with a period on Earth of one second is most nearly
a.) 0.12 m b.) 0.25 m c.) 0.50 m d.) 1.0 m
4 answers
asked by
gomez
3,214 views
Calculate the power of a pump which lifts 500kg of water through a vertical height of 4m in 5sec (assuming g=10m/s^2).
4 answers
asked by
...Mas'ud S. Yusuf#
931 views
A mass of 0.5kg is attached to one end of a helical spring and produced an extension amplitudeof 2.5cm.The mass is now set into
7 answers
asked by
Ayodeji
731 views
A copper block of mass 100g at a temperature of 150 degree celcius is dropped into a copper calorimeter of 40g containing 80g of
4 answers
asked by
Blessing
1,108 views
a body is projected horizontally with a velocity of 80m/s from the top of a tower 160m above the ground. find the time of
5 answers
asked by
Projectile
1,196 views
A tractor is towing a large trailer on a horizontal road at a constant speed of 15km/h .The mass of the trailer is 1.3t and the
4 answers
asked by
Pearl
899 views
A radioactive substance decays exponentially. A scientist begins with 130 milligrams of a radioactive substance. After 20 hours,
4 answers
asked by
Jhon
3,416 views
Three different size lights are running off a low voltage system. The resistance of the three lights are R1 =3 ohms, R2 = 9
4 answers
asked by
DariaV
1,403 views
A helicopter drops a box of supplies after a disaster. The function represents the height y (in feet) of the box t seconds after
4 answers
asked by
Robert
2,261 views
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