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a boat sails 150km N60°E, then 100km West. What is it's displacement from its starting point?
3 answers
asked by
Victor
585 views
Convert to m/s
40m/min
3 answers
asked by
Anonymous
389 views
What is the difference between acceleration, speed and velocity?
1 answer
asked by
Mike Smith
413 views
A 5.0 uF capacitor is charged to a p.d of 10v. It is then removed from the supply and connected in parallel with an uncharged 20
3 answers
asked by
Saad
1,531 views
state the finctions of double wall,silver wall and cork sttoper -
1 answer
asked by
Busola
256 views
A dram of mass 100kg is rolled into the deck of long 1.5m above a horizontally floor using a plank 4m long.calculate the work
3 answers
asked by
Yegh margaret
485 views
A baseball is thrown at 40 m/s. Jose Bautista hit it back in the opposite direction at a speed of 65 m/s. The ball is in contact
2 answers
asked by
Sarah
564 views
What's is the change in the barometer I'd it is carried to the moon
1 answer
asked by
At the moon what is the height of mercury in barometer
251 views
When Reggie stepped up to the plate and hit a 0.150-kg fast ball traveling
at 36.0 m/s, the impact caused the ball to leave his
4 answers
asked by
Hannah
1,173 views
A wheel has a radius of 100 cm. How far (path length) in meters does a point on the circumference travel if the wheel is rotated
1 answer
asked by
jack
436 views
A car accelerates a form an initial speed to higher final sped while the engine puts out constant power. During this time
1 answer
asked by
Anonymous
375 views
A child’s toy consists of plastic attached to a spring. The spring is compressed against the floor a distance of 2.46 cm, and
1 answer
asked by
Ke
797 views
two identical metallic ball spherical shells A and B charges 4Q and -10c are kept a certain distance apart a third uncharged
5 answers
asked by
Anonymous
6,720 views
The radius of curvature of a loop-the-loop for a roller coaster is 11.8 m. At the top of the loop (with the car inside the
1 answer
asked by
Dalton
628 views
A 250.0 kg motorcycle can roll 45.9 m up a long hill before coming to a stop if the motorcycle approaches the base of the hill
1 answer
asked by
Matt
360 views
What is the total amount of potential energy that can be stored in a 10,000 gallon water tower built with the water tank 61.50 m
2 answers
asked by
Matt
586 views
A cube weight 15N in air and 20N when totally immersed in water. Find the value of the cube of the density.
3 answers
asked by
KAUNA
461 views
An electric heater the temperature of 120g of water in a thin light vessel through 10k in 2 minutes, when placed in 70g of water
3 answers
asked by
Anne
563 views
A 77 kg man climbs the stairs to the fifth floor of a building, a total height of 15.2 m. What is his potential energy in Joules
3 answers
asked by
Colten
809 views
The horizontal surface on which the block slides is frictionless. The speed of the block before it touch the spring is 6.0 m/s.
4 answers
asked by
Nicole
2,559 views
An ideal spring hangs vertically from the ceiling. When 1.0 kg mass hangs from the spring it is extended 5.0 cm from its relaxed
2 answers
asked by
Nicole
1,209 views
Water of mass 200g and temperature 10digrees Celsius is put in a copper calorimeter of mass 80g. Steam from boiler at a normal
2 answers
asked by
David
881 views
A car accelerates from zero to 80 mph in 8.0 seconds. What is the average speed during this activity?
So I thought to calculate
2 answers
asked by
Maria Garcia
478 views
A person walking across the room with a constant speed of 2m/s, and they run back with a constant speed of 8m/s. What is their
1 answer
asked by
Maria Garcia
419 views
A person walking across the room with a constant speed of 2m/s, and they run back with a constant speed of 8m/s. What is their
1 answer
asked by
Maria Garcia
449 views
hearing rattles from a snake, a boy make two rapid displacements of magnitude 1.8m and 2.4m in sketches show how the two
1 answer
asked by
Anonymous
412 views
A(n) 0.34 kg soccer ball approaches a player horizontally with a speed of 6.18 m/s. The player illegally strikes the ball with
2 answers
asked by
Kiera
635 views
A force of 132 new inns is applied in pushing a stalled autoMobile at constant speed for a distance of 150 m. How much work is
3 answers
asked by
Mirlande
503 views
The A box is being pulled by a rope across a level floor as shown in
the diagram. The box is accelerating at 1 m/s2, the
2 answers
asked by
Anonymous
1,198 views
9.) A 1 570 kg satellite orbits a planet in a circle of radius 5.94 x 106 m. Relative to zero at infinity the gravitational
1 answer
asked by
Andy
491 views
For a pendulum that completes fifteen complete swings in 34.8 seconds, how much is the frequency?
2 answers
asked by
Lozzzz
759 views
Three charges lie along the x axis the positive charge Q1 = 4mC is at X=2m and the postion of postive Q2 = 8uC is at the origin
1 answer
asked by
Anonymous
779 views
A spring is compressed a distance of 'x' stores 500J of energy. How much energy is stored in the spring if it is compressed a
2 answers
asked by
kiddo
476 views
A 55kg arrow is fired vertically upward at a speed of 42m/s. It rises upwards, then drops and lands on the ground. If it lodges
1 answer
asked by
Laura
430 views
A 240 kg roller coaster car Rolls over the crest of the roller coaster with a speed of 2.2m/s.if it falls through a vertical
3 answers
asked by
Laura
628 views
Hello so my question is an 85kg kangaroo acquires 2.2kJ of energy in jumping straight up and down from rest. How high does the
1 answer
asked by
Amy
432 views
Determine the amount of work required for each of the following:
a) to lower a 35kg sack of rice through a height of 3.5m b) to
2 answers
asked by
Amy
538 views
A billiard ball 0.62 kg moving at 8.2 m/a elastically strikes a bowling ball, 3.2 kg moving in opposite direction at 1.2 m/s
Calc
2 answers
asked by
Jen
526 views
a . rather then taking the elevator a a 65kg student decided to climb 276m vertical height of stairs to the observation deck of
1 answer
asked by
tristan
442 views
A. A 45kg gymnast launched herself from a vault with a speed of 1.8m/s.she lands upright on the ground 125 cm below at what
1 answer
asked by
tristan
423 views
An object 5cm high is placed at a distance 60cm in front of a concave mirror of focallength 10cm.find the position and size of
1 answer
asked by
Sricharan
429 views
A car with a mass of 1500kg is moving at a speed of 50 km/h. What is it's Ek?
2 answers
asked by
Mileena
622 views
A hockey puck has a mass of 210 g. If the hockey puck has 73 J of kinetic energy, what is its speed?
2 answers
asked by
Mileena
549 views
An electric kettle rated accurately at 2.5kw is used to heat 3kg of water from 15% to boiling point it takes 9.5 minute. Then
4 answers
asked by
Anonymous
1,394 views
an 1100 kg car accelerates from rest at 3.4 m/s2. if the horizontal force exerted on the wheels by the road is 5600 N, what
1 answer
asked by
Jessie
779 views
Using heat exchange and conservation of thermal energy, determine the specific heat capacity for your metal.
So the data we have
3 answers
asked by
Amy
617 views
Determine the percentage error.
So we found that aluminium has a specific heat capacity of 18441J/KgC And I know that the
2 answers
asked by
Amy
518 views
Please help
A fully loaded aircraft has a mass of 3.3×10^5 kg.its total wing area is 500m2 . It is in level flight with a speed
2 answers
asked by
Rodney Tape
572 views
To make ice cubes you fill am ice tray with 150g of water at 20°C. How much energy must be removed from the water to create ice
3 answers
asked by
Kevin
1,203 views
Why are w=fxd and E =mc2 both energy
3 answers
asked by
Mileena
385 views
A 30km/h (8m/s) gust of wind results in 25 N of force on a kite that pulls a 50kg kiter off her feet and drags her 8m. How much
1 answer
asked by
Mileena
397 views
How much heat is required to melt 2.4kg of ice at 0 degrees Celsius?
So here's what I did: Q=mct = 4200x2.4x(100-0) I assumed the
3 answers
asked by
tristan
495 views
A ball falls from the top of a high cliff. A second ball is thrown downward from the same height 4 secs later with an initial
2 answers
asked by
Ifunanya
566 views
One more please, I cant figure out the equations.
Boats generally have a hard time traveling faster than their hull speed, which
1 answer
asked by
Phil
464 views
At a nuclear power plant, water at 6degress Celius from a nearby lake is used in a heat exchange to condense spent steam at a
2 answers
asked by
alex
562 views
The Achilles tendon is attached to the rear of the foot as shown in
Tap image to zoom . A person elevates himself just barely off
2 answers
asked by
Shoug
1,229 views
Which of the following wavelengths will produce standing waves on a string that is 1.9 m long?
A.1.9 B.3.3 C.3.5 D.95
2 answers
asked by
Gwen
948 views
A horizontal pipe is shown and has an area of 40.0 cm2 in wide areas and 10.0 cm2 in narrow areas. It is also connected to a U
2 answers
asked by
Francis
593 views
Standard Temperature and Pressure (STP) is defined as a temperature of 0.00oC and a pressure of 100kPa. If the molar mass M of
1 answer
asked by
Francis
619 views
A glass flask with a mass ok 3.00kg and volume of 1000 cm3 is completely filled with mercury and is at a temperature of 55.0oC.
1 answer
asked by
Francis
831 views
A bar of gold and a bar of silver are used to conduct heat from one end maintained at 80.0oC and another end maintained at
2 answers
asked by
Francis
523 views
Two pellets, each with a charge of 0.80 microcoulomb (8.0×10−7 C ), are located 2.8 cm (2.8×10−2 m ) apart.
Part A Find the
2 answers
asked by
Jay
746 views
A box is being pulled along a rough horizontal surface by a rope which has a tension of 10N at an angle of 60 degrees with the
3 answers
asked by
Arusham
992 views
If you were to launch a block with m = 0.500 kg up a ramp with θ = 15ο and µk =
0.30 with a plunger with k = 100 N/m which
1 answer
asked by
Mason
760 views
trainA is moving at speed of 115 km/hr on a track on the same track 100 m away a trainB is moving at speed 25km/hr what should
1 answer
asked by
Rohan arora
294 views
Two basketball players collide. Player 1, with a mass of 55.0 kg, experience a -15.6 m/s2 acceleration. If player 2 has a mass
2 answers
asked by
Sarah
577 views
A plane with a mass of 4.50 x 10^3 kg accelerates on takeoff at 10.0 m/s2. What is the net force acting on the plane?
2 answers
asked by
Sarah
1,041 views
A 12.0 kg object is on a surface that is inclined 30 degrees and the coefficient of friction is 0.65.
Determine the force of
1 answer
asked by
Sarah
406 views
A 95 kg halfback makes a turn on the football field. The halfback sweeps out a path that is a portion of a circle with a radius
4 answers
asked by
Joshua
3,116 views
a 10.0 kg box is placed on a ramp that is inclined at 30.0 degrees to the horizontal.
Determine the force friction required to
2 answers
asked by
Shawn
714 views
two basketball players collide player 1 with a mass of 55.0 kg experiences a -15.6 m/s2 acceleration. if the player 2 has a mass
2 answers
asked by
Sarah
547 views
An 1800 kg helicopter rises with an upward acceleration of 2.0 m/s2. What lifting force is supplied by its rotating blades?
3 answers
asked by
Lee
668 views
A seagull drops a claim from a height of 40m above the rocks. If the air temperature is 0 degrees C, how long after the claim is
1 answer
asked by
amy
401 views
An air column that is open at both ends is 1.50m long. A specific frequency is heard resonating from the column what is the
4 answers
asked by
emily
747 views
Suppose you are provided with 500 dice.calculate the number of throws that is equivalent to one half life and the decay costant
4 answers
asked by
Kevin
1,525 views
A plutonium- 239 nucleus initially at rest undergoes alpha decay to produce a uranium-235 nucleus. The uranium-235 nucleus has a
1 answer
asked by
Veronica
850 views
A plutonium- 239 nucleus initially at rest undergoes alpha decay to produce a uranium-235 nucleus. The uranium-235 nucleus has a
1 answer
asked by
Anonymous
684 views
in an enclosed container , 100g of ice at -10c and 200g of water at 25 c are mixed. Determine the amount of heat required to
1 answer
asked by
EBRAHIM
1,163 views
A particle starts from rest and has an acceleration of 2m/s*2 for 10sec.After that, the particle travels for 30sec with constant
2 answers
asked by
Sunidhi
1,109 views
A charge of 5.00 ✕ 10^-9 C and a charge of -3.50 ✕ 10^-9 C are separated by a distance of 60.0 cm. Find the position at
3 answers
asked by
Mary
2,391 views
A satellite is orbiting a distant planet of mass 9.6e25 kg and radius 86700 km. The satellite orbits at a height of 8610 km
2 answers
asked by
Zoey
675 views
A child leaves her book bag on a slide. The bag, which is at the top of the slide, starts from rest and reaches the bottom in
3 answers
asked by
Shreya
1,168 views
What is the displacement from a starting position of (14.0,3.0)m to a final position of (-3.0,-4.0) m?
2 answers
asked by
Cindy
514 views
What is the polar notation for a vector that points from the origin to the point (0,5.00) ?
3 answers
asked by
Cindy
1,031 views
If the vectors A and B are such that |A+B|=|A-B, then find the angle between vectors A and B?
1 answer
asked by
ABC
408 views
Find the angle between the vectors A=6i+8j+10k
B=6i+8j-10k
4 answers
asked by
ABC
1,449 views
The maximum and minimum magnitudes of the resultant of two given vectors are 17N and 7N respectively. If two vectors are at
2 answers
asked by
ABC
750 views
The percentage errors in the measurement of mass and speed are 2% and 4%respectively. Then find maximum error in the measurement
2 answers
asked by
ABC
609 views
2 charges of 16 microculomb and 25 microculomb are separated by a distance of 2 metre apart.If another charge of 5 microculomb
1 answer
asked by
Abhilash
402 views
Find the refractive index of a transparent medium in which light travels with a speed of 1.8×10^8m/s.Given that speed of light
3 answers
asked by
Anjali
819 views
A uniform rod of weight 300N and 2m long is hinged to the floor at one end so that it can rotate in the vertical plane. The
2 answers
asked by
Lucky
714 views
Explain the all three laws of motion
1 answer
asked by
Garvit Juneja
289 views
a soccer ball is kicked from the top of a 50ft high hill with an initial velocity of 25ft/s at angle 30 degrees below
2 answers
asked by
Anonymous
666 views
how much work is needed to raise a 6.0 Kg object14.0 m at constant speed?assume that friction is negligible.
1 answer
asked by
lora
299 views
A 30m bar with a mass of 20kg is being lifted by a string. The bar makes an angle of 55 degrees above horizontal (between the
4 answers
asked by
Riley
547 views
An elevator weighing 400kg is to be lifted up at a constant velocity of 0.6m/s for this purpose a motor of required horse power
4 answers
asked by
Faizankhan
1,247 views
A bullet fired target loses half of it velocity in penetrating 15cm .how much further it will penetrate before coming to rest
1 answer
asked by
Samyukta
374 views
Given vector A= 3 i cap + j cap + 4k cap and vector B = i cap + 3 j cap - 5 k cap. Find the unit vector in the direction of
2 answers
asked by
Anjela Shirin
676 views
A car weighing 1000kg is going up an incline with a slope of 2 in 25 at a steady speed of 18kmph.If g=10m/s2, the power of its
7 answers
asked by
Thousif
2,804 views
When a body slides along an inclined plane of height 'h' and describes a vertical circle of radius r on reaching the bottom
Ans:h
5 answers
asked by
Thousif
2,436 views
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