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Physics
Page 13
Questions (147,489)
Sound travels through a guitar string at 600 m/s, making a sound wave in the air with a speed of 333 m/s. In 1–2 sentences,
1 answer
asked by
aaagtuygy
38 views
A net force of 200n gives a body of mass m1 an acceleration of 80m/s2 and a body of mass m2, an acceleration of 240m/s2. The
6 answers
asked by
SANJU
4,801 views
a man 80kg carries a load of bricks of mass 20kg up a vertical ladder of length 6m what work has he done
7 answers
asked by
ISAAC
4,204 views
A box of mass m = 6kg slides with speed v = 4 m/s across a frictionless floor. It suddenly explodes into two pieces. One piece,
6 answers
asked by
Shahab Mirza
4,451 views
the loudness L of a sound in decibels is given L=10log10R, where R is the sound's relative intensity. if the intensity of a
5 answers
asked by
math challenged
7,906 views
A 34 g glass thermometer reads 21.6°C before it is placed in 135 mL of water. When the water and thermometer come to
5 answers
asked by
Akbar
4,768 views
A skier wants to build a rope tow to pull herself up a ski hill that is inclined at 15 with the horizontal. Calculate the
5 answers
asked by
Albert
5,497 views
The temperature of earth atmosphere drops 5°C for every 1km elevation above the earth surface. If the air temperature at ground
5 answers
asked by
Eurt
8,180 views
A 0.230-kg wooden rod is 1.55 m long and pivots at one end. It is held horizontally and then released.
1) What is the angular
4 answers
asked by
anonymous
3,887 views
1. In a standing wave, the medium at the tip of a loop is
a) showing destructive interference b) not moving c) at the original
6 answers
asked by
Liz
2,848 views
An airplane is heading north at an airspeed of 500 km/hr, but there is a wind blowing from the northwest at 50 km/hr. how many
5 answers
asked by
Dan
4,077 views
the fence posts around a large pasture are 2.5m apart. a horse starts running west beside the fence. when the horse passes the
5 answers
asked by
Sarah
2,450 views
A radioactive element decays exponentially according to the function Q(t) = Q0ekt
.If 100 mg of the element decays to 25 mg in 12
5 answers
asked by
Rania
3,440 views
Two pipes of equal length are each open at one end. Each has a fundamental frequency of 715 Hz at 300 K. In one pipe the air
4 answers
asked by
Tia
4,211 views
The sprockets and chain of a bicycle are shown in the figure. The pedal sprocket has a radius of 4 in., the wheel sprocket a
4 answers
asked by
monic
11,335 views
Two rocks of very different sizes are dropped from the same height. Which value will be different for the two rocks?(1 point)
the
10 answers
asked by
Help plz
6,232 views
a resistor R is connected in parallel with a 10-ohm inductive reactance. the combination is then connected in series with a 4ohm
4 answers
asked by
Student
2,074 views
How far apart are an object and an image formed by a 75.0cm focal length converging lens if the
image is 2.5x larger than the
4 answers
asked by
Timson Wakrit
2,775 views
A catapult launches a boulder with an upward velocity of 184 feet per second. The height of the boulder, (h), in feet after t
11 answers
asked by
SkatingDJ
6,444 views
How long does it take to fully charge a 5µF capacitor in series witha 5 Mega Ohm resistor
5 answers
asked by
Matt, AGAIN
3,383 views
DISTANCE-TIME for RUNNERS
Time(s) 1 2 3 4 Sally's Distance(m) 2 4 6 8 Alonzo's Distance(m) 1 2 2 4 Make a distance-time graph
6 answers
asked by
Ashley
4,688 views
mgh=1/2mv^2, solve for the variable v
7 answers
asked by
Lisa
9,957 views
A weight is attached to a spring that is oscillating up and down it takes 6 sec for the spring to complete one cycle and the
5 answers
asked by
Stan
6,435 views
An object located in front of a concave mirror with a radius of curvature of 80 cm produces an invert image that is three times
7 answers
asked by
ALan
3,164 views
Question Four
A simple pendulum is used in a physics laboratory experiment to obtain an experimental value for the gravitational
5 answers
asked by
Jay Peels
1,261 views
a diver dives from a cliff .when her centre of gravity is 46 ft above the surface of the water. her initial vertical velocity
7 answers
asked by
E
2,146 views
1. A 2.5 kg mass at rest on a horizontal surface is acted upon by an applied horizontal force of 150 N. A frictional force of
23 answers
asked by
Lisa
3,474 views
(1) Which statement about the number of protons and neutrons in a nuclear change is correct?
(A)The total charge before and after
4 answers
asked by
Student
1,749 views
A car of mass 760kg travel with a velocity of 14.0ms-1 . If the brakes are applied , the car travels a distance of 55.0m before
5 answers
asked anonymously
180 views
Waves travelling along a string have a wavelength of 2.4m. When the waves reach the fixed end of the string, they are reflected
5 answers
asked by
Kayla
3,068 views
A coil of 50 ohm resistance and of 150mH inductance is connected in parallel with a capacitor 50microF. The source voltage is
4 answers
asked by
Student
3,792 views
Mary is riding a merry-go-round, whose radius is 25 feet and which is turning 36 degrees per second. Seeing a friend in the
5 answers
asked by
Mike
3,102 views
A tennis ball is projected vertically upwards from the top of a 55 m cliff by the sea. Its height from the point of projection,
5 answers
asked by
Mishka
2,548 views
if it takes 31,500 joules of heat to warm 750g of water, what was the temperature change?
My answer: Q = (M) (DeltaT) (c) Delta
5 answers
asked by
sam
6,022 views
What are examples of inclined planes in the kitchen?
5 answers
asked by
danny123
3,194 views
Electric bulb is Marked 60 watts 120 volt what is the resistance of filament of bulb
4 answers
asked by
Sunny
5,444 views
make m the subject of the formula mg-t= ma
5 answers
asked by
esther edomoh
513 views
A vehicle is travelling 1.0x10^2 km/h. what is the spped of the vehicle in metres per second?
28m/s 27.8m/s 3.6x10^2m/s
4 answers
asked by
Emmanuel
3,696 views
What happens to light as it passes through a blue sports drink?(1 point)
7 answers
asked by
who dat
1,096 views
When measuring specific heat, why should your final temperature be the maximum temperature reached calorimeter?
4 answers
asked by
miyabi
2,772 views
1. Scientists seek to acquire knowledge and understanding of the real world through the formulation, testing, and evaluation of
4 answers
asked by
Idk name here
1,529 views
A load of 30N is raised 2m when an effort of 10N moves 8m calculate the velocity ratio and efficiency of a machine
5 answers
asked by
Odukoya
1,434 views
A car travels along a straight road for 30 seconds starting at time t = 0. Its acceleration in ft/sec2 is given by the linear
6 answers
asked by
Ke$ha
5,489 views
Two sound waves are traveling through a container of unknown gas. Wave A has a wavelength of 1.2 m. Wave B has a wavelength of
7 answers
asked by
lost in life
7,993 views
A car of mass 600 kg is moving at a speed of 20 m/s.it collides with a stationary car of mass 900 kg.if the first car bounces
10 answers
asked by
Mrsi
4,655 views
A horizontal force of 804 N is needed to drag a crate across a horizontal floor with a constant speed. You drag the crate using
5 answers
asked by
Anonymous
3,581 views
The blade of a windshield wiper moves through an angle of 90.0° in 0.398 s. The tip of the blade moves on the arc of a circle
7 answers
asked by
vik
9,946 views
A simple lever is used to lift a heavy load. When a 60-N force pushes one end of the lever down 1.2 m, the load rises 0.2 m.
7 answers
asked by
Peg
11,393 views
HELP HELP
When a chameleon captures an insect, its tongue can extend 16 cm in 0.10 s. (a) Find the magnitude of the tongue’s
5 answers
asked by
beginner
8,749 views
A solid aluminum ingot weighs 89 N in air. What is its volume? The ingot is suspended from a rope and totally immersed in water.
4 answers
asked by
Anonymous
6,376 views
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