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Physics
Page 58
Questions (147,491)
a) Find the angular velocity of a wheel that rotates 6 times every 4 seconds.
b) What is the tangential velocity of the outside
5 answers
asked by
Martin
2,564 views
What is the rotational speed of the hour hand on a clock?
-----rev/s
4 answers
asked by
Sue
2,260 views
A projectile is launched with an initial speed of 59.0 m/s at an angle of 32.0° above the horizontal. The projectile lands on a
4 answers
asked by
Mary
2,048 views
In a phsics experiment, a 1.3 kg dynamics cart is placed on a ramp inclined at 25 degrees to the horizontal. the cart is
4 answers
asked by
Lola
2,175 views
How much force is needed to bring a 3200 lb car from rest to a velocity of 44 ft/s in 8 seconds? Please indicate the formula
5 answers
asked by
Hale
1,702 views
A ferris wheel rotates at an angular velocity of .036 rad/s. At t=0min your friend Seth is at the very top of the ride. What is
5 answers
asked by
Sarah
3,048 views
A sample of pure cobalt-60 has an activity of 8 µCi.
(t1/2 cobalt-60 = 5.26 a) (a) How many atoms of cobalt-60 are present in
4 answers
asked by
Trixie
808 views
What is the explanation for the discrete lines in atomic emission spectra?
5 answers
asked by
Rebecca
3,679 views
For the potential-energy diagram in (Figure 1), what is the maximum speed of a 5.0 g particle that oscillates between x = 2.0 mm
4 answers
asked by
alen
2,365 views
Two cars are moving with a constant speed towards finish marker, car A is moving from the north at 16km/hr and car B is moving
4 answers
asked by
Arsh 2
912 views
A hunter shoots an arrow at a deer running directly away from him. When the arrow leaves the bow, the deer is at distance of 42
4 answers
asked by
Cassidy
1,576 views
A meter rule is balanced horizontally on a mass of 30kg hung 20cm from one end. If the position of the knife edge is 18cm from
5 answers
asked by
Maryann
1,618 views
How many electrons pass through a wire in 5 minutes, if the current through a wire is 400 mA
7 answers
asked by
satinder
7,133 views
At what rate is a 60.0-kg boy using energy when he sprints up a flight of stairs 10.0 m high in
8.00 s? A. 75.0 W B. 48.0 W C.
4 answers
asked by
dali
8,133 views
a stone projected horizontally from the top of a tower with a speed of 4m/s lands on the level ground at a horizontal distance
5 answers
asked by
Emmanuel
2,288 views
A ball of mass 8 kg falls from rest from a height of 100 m. Neglecting air resistance, calculate its total energy after falling
16 answers
asked by
Bada
4,931 views
in the hydraulic machine shown, you observe that when the small piston is pulled down 10cm, yhe large piston is raised 1 cm. if
4 answers
asked by
john
5,924 views
During the video clips Prof. kstra posed the question: "How many helium party balloons could you safely carry before getting
5 answers
asked by
Samar
830 views
a child and a sled weighed 290N slide down an ice covered hill that is 10m high. at the bottom of the hill there is an free ice,
7 answers
asked by
mutinta
1,385 views
A ball of mass 200g, travelling with a velocity of 100m/s, collides with another ball of mass 800g, moving at 50m/s in thesame
7 answers
asked by
Yakubu Samuel
1,767 views
a body of 700g hangs from the end of a long wire fixed to a high tree. A horizontal string attached to the body pulls it until
7 answers
asked by
Chidi
2,578 views
An arrow is shot vertically upward from a platform 48 ft high at a rate of 233 ft per sec. When will the arrow hit the ground?
5 answers
asked by
diane
2,161 views
A 20.0 kg box slides down a 12.0 m long incline at an angle of 3.0 degrees with the horizontal. A force of 50.0 N is applied to
5 answers
asked by
mpizo
5,012 views
A small sandbag is dropped from rest from a hovering hot air balloon. After 2.0 s, how far below the balloon is the sand bag?
5 answers
asked by
Zenon02
4,037 views
Why does hot air rise from pavement on a hot summer day?(1 point)
Responses Due to insulation Due to insulation Due to conduction
7 answers
asked by
Latina baddie ✧
281 views
nuclear equation for the decay of iridium−192 with β and γ emission
4 answers
asked by
Anonymous
694 views
In the process of being thrown, a 0.500 kg ball travels at a speed of 10.0m/s over a distance of 0.75m. What is the force that
5 answers
asked by
David
687 views
Q.1 A ball is thrown 233 m upward and then falls back to earth.
Neglecting air resistance, how long will it be in the air? The
4 answers
asked by
Lucas G
1,979 views
A stuntman is being pulled along a rough road at a constant velocity by a cable attached to a moving truck. The cable is
4 answers
asked by
A.S
3,715 views
A block and tackle has a velocity ratio of 4 and it is used to vertically raise a load of mass 50kg.if the effciency is
9 answers
asked by
Anonymous
3,700 views
The driver of a car traveling at 25.0 m/s applies the brakes and undergoes a constant negative acceleration of magnitude 2.50
4 answers
asked by
Taylor
2,708 views
A 6.75-g sample of gold (specific heat capacity = 0.130 J/g °C) is heated using 55.8 J of energy. If the original temperature
5 answers
asked by
dave
3,706 views
An object is thrown vertically upward at 18m/s from a window and hits the
ground 1.6s later. What is the height of the window
4 answers
asked by
l
2,394 views
The minimum frequency for the photoelectric effect of a zinc plate is 9.7 × 1014 Hz. What will be the kinetic energy of an
4 answers
asked by
Pat
2,309 views
A 60 kg student does 60 push ups in 40s . With each push up , the student must lift 70% of the body mass a height of 40cm off
5 answers
asked by
Melissa
2,602 views
An energy of 6.0×10−2 J is stored in the metal sphere on top of a Van de Graaff generator. A spark carrying 1.0 micro-coulomb
4 answers
asked by
Helen
3,170 views
A mass m at the end of a spring vibrates with a frequency of 0.87 Hz. When an additional 602 g mass is added to m, the frequency
4 answers
asked by
Tom
3,673 views
A tether ball of mass 0.25 kg is attached to a vertical pole by a cord 1.4 m long. Assume the cord attaches to the center of the
4 answers
asked by
Tina
3,579 views
The drawing shows two surfaces that have the same area. A uniform magnetic field B fills the space occupied by these surfaces
4 answers
asked by
Mary
3,910 views
9. A lump of gold sample is suspected to have a mass of 500g and is found to have a relative den of 5.2
Find what mass of gold is
5 answers
asked by
Kenny
1,256 views
A 70.0 kg skydiver falls towards the earth. If the force due to air resistance is 500 N, what is the acceleration of the
5 answers
asked by
Apple Annie
3,536 views
the upthrust on a boat is 1000 N what is the weight of the boat
10 answers
asked by
meenakshi
1,205 views
A bicycle wheel is accelerating at the constant rate of 1.4 rev/s2
(a) If it starts from rest, what is the rotational velocity
4 answers
asked by
Anonymous
1,295 views
An airplane starts from rest at the end of a runway and
accelerates at a constant rate. In the first second, the airplane travels
4 answers
asked by
suri
4,930 views
A 1.5 uF capacitor is connected to a 9.0 V battery. Use PE=1/2C(change in V)^2 to find the energy stored in the capacitor.
5 answers
asked by
Michael
2,767 views
A solid ball of mass m and radius r rolls without slipping through a loop of radius R, as shown in the figure. From what height
4 answers
asked by
Anonymous
1,729 views
an astronaut rotates at the end of a test machine whose arm has a length of 10.0m. if the acceleration she experiences must not
7 answers
asked by
katy
3,173 views
The two masses (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in Figure 10-23 are released from rest, with m1 at a
5 answers
asked by
Jon
4,020 views
A weight suspended from a spring is seen to bob up and down over a distance of 37 cm twice each second.
What is frequency in
4 answers
asked by
Bob
3,986 views
A batter hits a ball with an initial velocity v0 of 100 feet per second at an angle theta to the horizontal. An outfielder
5 answers
asked by
Anonymous
5,968 views
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