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Physics
Page 64
Questions (147,484)
A 580mL sample of water was cooled from 60°C to 10°C. how much heat was lost?
4 answers
asked by
Anonymous
605 views
For a given machine the load moves 2 m when the effort moves 8m,if an effort of 20 N is used to raise a load of 60N, what is the
4 answers
asked by
Alex
1,036 views
A long rope is fixed at one end and the free end is made to oscillate in one plane at right angles to the rope with a frequency
4 answers
asked by
Gold
408 views
1. Sandbag is dropped from rest from a hot air balloon at an altitude of 124 m. A horizontal wind is blowing, and the wind gives
4 answers
asked by
Anonymous
1,102 views
a 75 kg object traveling at 4 m/s collides with and sticks to a 125 kg object initially at rest, what is the final velocity of
4 answers
asked by
j
513 views
A passenger in a boat approaching a dock attempts to step onto the dock before the boat has been tied up. The passenger, whose
4 answers
asked by
Heather
1,273 views
An object is thrown directly downwards from a height of 60m with an initial velocity of 11m/s. What will be its velocity on
4 answers
asked by
Ethan
911 views
A 0.300-kg of ice is initially at temperature of −8.0 °C. How much heat is required to melt three-quarters the mass of the
4 answers
asked by
steve
2,393 views
A spacecraft is on a journey to the moon. At what point, as measured from the center of the earth, does the gravitational force
4 answers
asked by
A.S
2,350 views
Six identical books, 4.0 cm thick and each with a mass of 0.8kg, lie individually on a flat table.How much work would be needed
4 answers
asked by
Kayla
1,292 views
Consider a child standing on a beach who gets hit by a wave. The child weighs 30 kg, and the portion of the wave that hits the
4 answers
asked by
Ellie
1,000 views
In 5 seconds a car accelerate from 0 to 40 m/s. 20 sec after reaching 40m/s the car comes to a complete stop. if this
5 answers
asked by
Anonymous
1,144 views
The table that follows lists four pairs of initial and final angles of a wheel on a moving car. The elapsed time for each pair
4 answers
asked by
Tyler
2,784 views
A student eats a dinner containing 8.0x10 raised to power 6j of energy. He wishes to do an equivalent amount of work in a nearby
11 answers
asked by
Reigna
3,973 views
A ball is thrown directly upward at 19.6 m/s how much time passes before the ball reaches the top of its motion
4 answers
asked by
a.a
784 views
A coil takes a current of 10.0 A and dissipates 1410 W
when connected to a 230 V, 50 Hz sinusoidal supply. When another coil is
4 answers
asked by
lolo
3,369 views
Two objects are moving in the xy-plane. Object A has a mass of 3.2 kg and has a velocity of Va= (2.3 m/s)i + (4.2m/s)j and
4 answers
asked by
Carl
3,676 views
A stone is dropped from a cliff 344 feet high. after how many seconds will it be 200 feet above the ground?
4 answers
asked by
luis
1,170 views
A positive helium ion He+ is released from rest at the surface of a +1000 V flat electrode. It travels in the +x-direction (in
4 answers
asked by
Ed some one please help
857 views
each step of a ladder increases one's vertical height 40.0cm. If a 90 kg painter climbs 8 steps of the ladder, what is the
4 answers
asked by
Anonymous
2,738 views
A thermos contains 150cm3 of coffee at 85° C. To cool the coffee, you drop two 10g ice cubes into the thermos. The ice cubes
4 answers
asked by
Chase
3,338 views
What is the maximum equipment needed to determine the power dissipated in a resistor of unknown value?
1) a voltmeter, only 2) An
5 answers
asked by
Thomas
2,078 views
A golf ball is hit with an initial velocity of 50 m/s at an angle of 45° above the horizontal. How far will the ball travel
4 answers
asked by
ashley
2,772 views
a bowling ball has a diameter of 8.4 in. It is made of plastic that weighs 0.05lb/in cubed.Find the weight of the bowling ball
6 answers
asked by
christina
1,821 views
1) Charges of +4uC and -6uC are placed at two corners of an equilateral triangle with sides of 0.10m. At the third corner, what
4 answers
asked by
Andrew
4,889 views
A 20g plastic ball is moving to the left at 30 m/s. How much work must be done th cause the ball to move to the right at 30 m/s?
4 answers
asked by
nathan
4,566 views
The amount of light emitted from a battery indicator bulb pulses while the battery is charging. This can be modeled by the
6 answers
asked by
Christine
704 views
A popular daredevil trick is to complete a vertical loop on a motorcycle. This trick is dangerous, however, because if the
4 answers
asked by
Adam
2,111 views
A 4-kilogram mass has a speed of 6 m/s on a horizontal frictionless surface. The mass collides head-on and elastically with an
7 answers
asked by
Hannah
4,823 views
Which force accounts for the difference between mass and weight?
a Frictional force b Air resistance force c Magnetic force d
4 answers
asked by
GG
247 views
An iron tyre of diameter 50cm at 15 degree celsius is to be shrunk on to a wheel of diameter 50.35cm.To what temperature must
4 answers
asked by
Samilondon
385 views
A ball is thrown vertically upward from the ground with a velocity of 30m/s. (a) how
long will it take to rise to the highest
1 answer
asked by
Daniel
1,058 views
Two forces 10N and 20N are inclined at an angle of 60 to each other.find the resultant force?if the two forces are now made to
4 answers
asked by
Fidelis
947 views
A ball is dropped from a height of 12 feet and returns to a height that is half the height from which it fell. the ball
3 answers
asked by
brad
3,672 views
A truck with a mass of 20t has tractive resistance of 280 N/t if it travels speed of 72 km/h .calculate
The distance travelled in
3 answers
asked by
Pearl
776 views
a uniform metre rule of Mass 150g is pivoted at 60cm Mark.cal the mass which when hung at the 85cm Mark will balance
4 answers
asked by
gods time
1,234 views
The masses are each initially 1.8m above the ground, and the massless frictionless pulley is 4.8m above the ground. (a)
3 answers
asked by
Evaness
1,306 views
Two hockey pucks of equal mass are involved in a perfectly elastic, glancing collision, as shown in the figure below. The orange
4 answers
asked by
Jessica
3,690 views
A curved road is banked at an angle such that friction is not necessary for a car to stay on the road. a 2500 kg car is
4 answers
asked by
amelia
1,815 views
The five engines of the first stage of a launch vehicle provide a total thrust of
31.5 x 106 newtons to the space vehicle (launch
4 answers
asked by
baz
1,051 views
The velocity function (in meters per second) for a particle moving along a line is given by v(t)=t3−5t2. Find the displacement
4 answers
asked by
Help me plz!
2,346 views
Which has the greater amount of thermal energy, one liter of water at 50 degrees Celsius or two liters of water at 50 degrees
4 answers
asked by
Mary
2,783 views
A 28.4 g sample of aluminum is heated to 39.4 C, then is placed in a calorimeter containing 50.0 g of water. Temperature of
4 answers
asked by
Ish
4,255 views
3) A 10.0 kg object is hanging by a massless rope in an elevator that is traveling upward. The tension in the rope is measured
4 answers
asked by
Anonymous
1,481 views
The air in the syringe is at a pressure of 2.0×105Pa. The piston is slowly moved into the
syringe, keeping the temperature
4 answers
asked by
rida
1,745 views
Two identical metal spheres have charges of q1 and q2. They are brought together so they touch, and then they are separated. (a)
5 answers
asked by
Jayflord
4,150 views
A 160kg horizontal beam is supported at each end. A 330kg piano rests a quarter of the way from one end.
What is the vertical
4 answers
asked by
Melissa
4,092 views
The vector v has a magnitude of 89.7 feet and a direction of
12(degree sign)48'. find the magnitude of its vertical component a:
4 answers
asked by
Some1 Help Me Plz
1,829 views
An object accelerates uniformly from rest and covers 8m in 2 seconds. What is the distance covered in the third second?
4 answers
asked by
Allwell
1,128 views
A -4.0UC charge is located 0.45m to the left of a +6.0uc charge. what is the magnitude and direction of the electrostatic force
4 answers
asked by
josh
3,228 views
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