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an ungraduated mercury thermometer attached to a millimeter scale reads 22.8mm in ice and 242mm in steam at standard pressure.
7 answers
asked by
kate
2,241 views
A slab of ice floats on a freshwater lake.
What minimum volume must the slab have for a 50.0kg woman to be able to stand on it
4 answers
asked by
shree
11,966 views
(Q1)A wire of cross- sectional area of 0.00006m2 and length 50cm stretches by 0.2mm under a load of 3000n.Calculate the Young's
4 answers
asked by
kate
1,813 views
5. A boat capable of making 9.0 km/hr in still water is travelling upstream in a river
flowing at 4 km/h. An object lost
4 answers
asked by
ma
865 views
At what temperature will the root-mean-square speed of oxygen molecules have the value of 640 m/s? 1 kilomole of oxygen has a
4 answers
asked by
christ
895 views
A major-league catcher gloves a 92 mi/h pitch and brings it to rest in 0.15 m.
1-If the force exerted by the catcher is 803 N,
5 answers
asked by
pop
7,871 views
A force of magnitude 7.50 N pushes three boxes with masses m_1 = 1.30 kg,m_2 = 3.20 kg, and m_3 = 4.90 kg .The mass is side by
4 answers
asked by
susan
3,746 views
A blue ball is thrown upward with an initial speed of 20.6 m/s, from a height of 0.8 meters above the ground. 2.5 seconds after
7 answers
asked by
a
11,293 views
1 Physical quantities such as length, mass, time and temperature are referred to as
vector quantities fundamental quantities
5 answers
asked by
christ
840 views
A plane is flying west at 214 km/h. The wind is blowing south at 108km/h. a what is the ground speed of the plane
b In what
3 answers
asked by
SURAJ
621 views
Calculate the density for a rectangular block using the following
measurements. Length: 2.70 cm, Width: 1.10 cm, Height: 9.09 cm,
4 answers
asked by
irtaza
2,381 views
A 3.50 kg block on a smooth tabletop is attached by a string to a hanging block of mass 2.80 kg. The blocks are released from
4 answers
asked by
ivan
6,078 views
Calculate the electric power which must be supplied to the filament of of a light bulb operating at 3000K. The total surface
3 answers
asked by
christ
992 views
A weightless string is suspend on a frictionless pulley, a mass of 6 kg. is
suspend at one end and mass of 10 kg. is suspended on
3 answers
asked by
nimish
824 views
A wheel rotates about an axis passinG through the centre and perpendicular to the plane with slowly increasinG angular
4 answers
asked by
SAGAR
1,597 views
9. what is the relationship between the force and distance in an inverse square law?
does force= the two charges?
1 answer
asked by
jennifer
412 views
A scaffold of mass 50 kg and length 7.0 m is supported in a horizontal position by a vertical cable at each end. A window washer
2 answers
asked by
mark
573 views
A marble slides without friction in a vertical plane around the inside of a smooth, 21 cm-diameter horizontal pipe. The marble's
3 answers
asked by
Naso
1,172 views
vector B has a magnitude of 186. By is 0. What are the two possibilities for Bx?
1 answer
asked by
ami
311 views
1. A Uniform rod AB 3m long weighing 3 Kg is held horizontally by two strong vertical strings at its ends. A weight of 7 kg is
2 answers
asked by
shiva
893 views
what assumption have you made in performing the free fall lab experiment and analyyzing the results?
1 answer
asked by
ami
458 views
A horse canters away from its trainer in a straight line, moving 140 m away in 16.0 s. It then turns abruptly and gallops
2 answers
asked by
ami
480 views
A baseball is hit nearly straight up into the air with a speed of 24 m/s.
(a) How high does it go? (b) How long is it in the air?
2 answers
asked by
ami
1,104 views
A helicopter is ascending vertically with a speed of 5.50 m/s. At a height of 155 m above the Earth, a package is dropped from a
2 answers
asked by
ami
558 views
A horse canters away from its trainer in a straight line, moving 140 m away in 16.0 s. It then turns abruptly and gallops
2 answers
asked by
ami
827 views
with an average acceleration of -0.50 m/s^2, ho wlong will it take a cyclist to bring a bicycle with an intitial speeed of 13.5
4 answers
asked by
Ally
1,950 views
at what projection will the range of a projectile equal to 2 times its maximum height?
3 answers
asked by
ami
398 views
A boat can travel 2.60 m/s in still water.If the boat points its prow directly across a stream whose current is 1.10 m/s, what
3 answers
asked by
ami
1,291 views
At what projection angle will the range of a projectile equal to 3 times its maximum height?
4 answers
asked by
ami
1,426 views
i need help in writing newton second law lab. we did three experiment, first we constant mass, then acceleration and then force.
1 answer
asked by
ami
394 views
Two snowcats tow a housing unit to a new location at McMurdo Base, Antarctica, as shown in Figure 4-46. The sum of the forces A
2 answers
asked by
ami
878 views
Two crates, of mass m1 = 60 kg and m2 = 130 kg, are in contact and at rest on a horizontal surface (Fig. 4-54). A 620 N force is
2 answers
asked by
ami
657 views
Two crates, of mass m1 = 60 kg and m2 = 130 kg, are in contact and at rest on a horizontal surface (Fig. 4-54). A 620 N force is
3 answers
asked by
ami
807 views
Two crates, of mass m1 = 60 kg and m2 = 130 kg, are in contact and at rest on a horizontal surface (Fig. 4-54). A 620 N force is
2 answers
asked by
AMI
556 views
Two objects attract each other gravitationally with a force of 3.5 10-10 N when they are 0.33 m apart. Their total mass is 4.0
1 answer
asked by
ami
418 views
What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth
2 answers
asked by
ami
1,168 views
is that true or false A rock is thrown straight up into the air At the peak its acceleration was zero
3 answers
asked by
ami
741 views
is the net force on venus is zero?
1 answer
asked by
ami
366 views
is that true faster objects have a greater acceleration than slower objects?
1 answer
asked by
ami
346 views
is that true a block on a flat surface. The normal force on the block and weight of the block make up a third law pair.
2 answers
asked by
ami
511 views
Determine the radial acceleration of the car at this time.
If the curve were flat, what would the coefficient of static friction
2 answers
asked by
ami
490 views
A car at the Indianapolis-500 accelerates uniformly from the pit area, going from rest to 340 km/h in a semicircular arc with a
2 answers
asked by
ami
729 views
Why gravitional force and centrietal force is same between earth and moon?
1 answer
asked by
ami
309 views
A car at the Indianapolis-500 accelerates uniformly from the pit area, going from rest to 340 km/h in a semicircular arc with a
1 answer
asked by
ami
631 views
A 290 kg piano slides 4.6 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the
6 answers
asked by
mas
561 views
An 85 g arrow is fired from a bow whose string exerts an average force of 95 N on the arrow over a distance of 85 cm. What is
3 answers
asked by
mas
1,025 views
A baseball (m = 145 g) traveling 45 m/s moves a fielder's glove backward 15 cm when the ball is caught. What was the average
3 answers
asked by
mas
1,463 views
A baseball (m = 145 g) traveling 45 m/s moves a fielder's glove backward 15 cm when the ball is caught. What was the average
1 answer
asked by
mas
873 views
A 900 kg car rolling on a horizontal surface has speed v = 70 km/h when it strikes a horizontal coiled spring and is brought to
1 answer
asked by
mas
486 views
Jane, looking for Tarzan, is running at top speed (4.3 m/s) and grabs a vine hanging vertically from a tall tree in the jungle.
2 answers
asked by
mas
1,086 views
A sled is initially given a shove up a frictionless 27.0° incline. It reaches a maximum vertical height 1.45 m higher than
1 answer
asked by
mas
823 views
A vertical spring (ignore its mass), whose spring stiffness constant is 1000 N/m, is attached to a table and is compressed down
4 answers
asked by
mas
1,352 views
A ball is thrown from the window of a high-rise building with an initial velocity of 6.1 m/s at an angle of 32 deg. below the
1 answer
asked by
Anonymous
636 views
Find the center of mass of the three mass system that m1 = 1.90 kg and m2 = 1.30 kg. Specify relative to the center of the left
1 answer
asked by
ami
460 views
A ball of mass 0.540 kg moving east (+x direction) with a speed of 3.30 m/s collides head-on with a 0.740 kg ball at rest. If
4 answers
asked by
ami
1,167 views
A centrifuge rotor rotating at 13,000 rpm is shut off and is eventually brought uniformly to rest by a frictional torque of 1.30
3 answers
asked by
mas
803 views
A grinding wheel 0.62 m in diameter rotates at 2400 rpm.
(a) Calculate its angular velocity in rad/s. rad/s (b) What are the
2 answers
asked by
mas
1,174 views
An automobile engine slows down from 3500 rpm to 1100 rpm in 4.5 s.
(a) Calculate its angular acceleration, assumed constant.
3 answers
asked by
mas
1,404 views
A grinding wheel 0.62 m in diameter rotates at 2400 rpm.
(a) Calculate its angular velocity in rad/s. rad/s (b) What are the
3 answers
asked by
mas
1,344 views
A 175 kg horizontal beam is supported at each end. A 300 kg piano rests a third of the way from one end.
What is the vertical
2 answers
asked by
ami
684 views
A 12N force is applied to a 20kg door If a frictional torque is present what will be the angular acceleration of the door The
4 answers
asked by
ami
490 views
a 25 kg rod has a box hanging from it and is suspended from the ceiling by the string. The entire system isin equilibrium.
4 answers
asked by
ami
512 views
A scuba diver and her gear displace a volume of 71.0 L and have a total mass of 64.0 kg.
(a) What is the buoyant force on the
4 answers
asked by
mas
751 views
An undersea research chamber is spherical with an external diameter of 5.80 m. The mass of the chamber, when occupied, is 68400
2 answers
asked by
mas
633 views
does the mass of the object have a direct effect on the buoyant force or does the volume? Which of the two has no affect on the
1 answer
asked by
ami
429 views
why archimedes principle lab has more percentage errors or discrepancy than expected?
1 answer
asked by
mas
394 views
A pendulum has a period of 0.75 s on Earth. What is its period on a planet where the acceleration of gravity is about 0.41 that
1 answer
asked by
ami
411 views
An ordinary glass is filled to the brim with 350.0 mL of water at 100°C. If the temperature decreased to 19°C, how much water
2 answers
asked by
ami
1,202 views
What mass of steam at 100°C must be added to 1.00 kg of ice at 0°C to yield liquid water at 15°C?
3 answers
asked by
ami
2,040 views
A cube of ice is taken from the freezer at -7.5°C and placed in a 101 g aluminum calorimeter filled with 282 g of water at room
3 answers
asked by
ami
859 views
An 90 kg person steps into a car of mass 2600 kg, causing it to sink 2.35 cm on its springs. Assuming no damping, with what
3 answers
asked by
klk
1,393 views
2 kg of water at 5 celsius is added to ice at 0 celsius. The ice and water make up a closed system. Calculate how much of the
4 answers
asked by
brandy
516 views
During an isovolumetric process, the pressure on the gas is doubled and the amount of gas is tripled. If the initial temperature
1 answer
asked by
brandy
426 views
potential difference=40v b2n plate A & B.
find work done if q=+3C from a) B to A b) A to B *i already know the ans but i need the
4 answers
asked by
Yuni
367 views
Two point charges have a total charge of 525 µC. When placed 1.15 m apart, the force each exerts on the other is 25.7 N and is
1 answer
asked by
ami
428 views
The angle an airplane propeller makes with the horizontal as a function of time is given by \theta = (115 <units>rad/s</units>)t
2 answers
asked by
larry
998 views
In a capacitor, you have two plates, one is connected to a battery but other is not, how the other plate become charge ups.
1 answer
asked by
ami
422 views
The small archerfish (length 20 to 25 cm) lives in brackish waters of Southeast Asia from India to the Philippines. This aptly
2 answers
asked by
kia
546 views
As their booster rockets separate, Space Shuttle astronauts typically feel accelerations up to 3g, where g = 9.80 m/s2. In their
2 answers
asked by
kia
550 views
It is a lab question. For a standard stove top element, theoretically determine how long it will take to cool down toroom
1 answer
asked by
ami
269 views
A good scientific theory is one that has survived extensive scrutiny by the scientific community, but even so, why do we say
1 answer
asked by
Anonymous
433 views
Starting from rest, a car accelerates at 3.0 m/s^2 up a hill that is inclined 5.9 ^\circ above the horizontal.
1-How far
4 answers
asked by
elin
1,151 views
An archer shoots an arrow horizontally at a target 14 m away. The arrow is aimed directly at the center of the target, but it
4 answers
asked by
susan
1,444 views
An archer shoots an arrow horizontally at a target 14 m away. The arrow is aimed directly at the center of the target, but it
3 answers
asked by
pop
2,823 views
Snowballs are thrown with a speed of 11 m/s from a roof 6.0 m above the ground. Snowball A is thrown straight downward; snowball
4 answers
asked by
pop
2,890 views
A soccer ball is kicked with a speed of 9.15 m/s at an angle of 55.0^\circ above the horizontal.
1-If the ball lands at the same
2 answers
asked by
elin
958 views
A golfer gives a ball a maximum initial speed of 37.0 m/s.
1-What is the highest tree the ball could clear on its way to the
4 answers
asked by
elin
2,121 views
silver ball= 50g
water= 350 g water= 0 celcius equilibrium temperature= 10 celcius specefic heat capacity of platinum= 230 what
1 answer
asked by
pop
393 views
A major-league catcher gloves a 92 {\rm mi}/{\rm h} pitch and brings it to rest in 0.15 {\rm m}.
1-If the force exerted by the
2 answers
asked by
ivan
595 views
A major-league catcher gloves a 92 mi/h pitch and brings it to rest in 0.15 m.
1-If the force exerted by the catcher is 803 N,
2 answers
asked by
lily
526 views
A force of magnitude 7.50 N pushes three boxes with masses m_1 = 1.30 kg,m_2 = 3.20 kg, and m_3 = 4.90 kg .The mass is side by
2 answers
asked by
lily
547 views
A force of magnitude 7.50 N pushes three boxes with masses m_1 = 1.30 kg,m_2 = 3.20 kg, and m_3 = 4.90 kg .The mass is side by
3 answers
asked by
ana
747 views
A child goes down a playground slide with an acceleration of 1.36 m/s^2.
1-Find the coefficient of kinetic friction between the
4 answers
asked by
pop
1,876 views
You pull upward on a stuffed suitcase with a force of 150 N, and it accelerates upward at 0.760 m/s^2.
1-What is the mass of the
2 answers
asked by
elis
643 views
Pulling up on a rope, you lift a 4.05 kg bucket of water from a well with an acceleration of 2.50 m/s^2.
1-What is the tension in
1 answer
asked by
lily
410 views
When you push a 1.82-{\rm kg} book resting on a tabletop, it takes 2.21 N to start the book sliding. Once it is sliding,
2 answers
asked by
pop
534 views
A 45 kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 22 deg , the
2 answers
asked by
poul
728 views
a car rolls down an incline starting from rest A graph
1 answer
asked by
ana
356 views
A frog applies a constant force of 80N while pushing him up a hill, while gravity and legs
friction cause a constant 80N force in
1 answer
asked by
Tanzim
450 views
How much work is done by the motor in a CD player to make a CD spin, starting from rest? The CD has a diameter of 12.8 cm and a
1 answer
asked by
opp
453 views
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