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Physics
Page 49
Questions (147,332)
A piece of metal has a volume of 20 cm^3 and a mass of 300g.Calculate the density of the metal in kg/m^3.i got 15.plz confirm my
5 answers
asked by
lucy
2,291 views
Five lines in the H atom spectrum have the following wavelengths in Ǻ: a). 1212.7, b). 4340.5, c).
4861.3 d). 6562.8 and e).
9 answers
asked by
Samantha
4,055 views
An 8N force stretches a spring to the 20cm mark on a metre rule.if the extension on the spring is 4cm,calculate the original
5 answers
asked by
GEOFFREY
1,356 views
A machine has a velocity ratio 5 and is 80% efficient. What effort would be needed to lift a load of 2000N with the aid of this
11 answers
asked by
Anonymous
3,357 views
The height of an object moving up and down is described by y=72+40cos18t (in degree mode). To at least three decimal places,
4 answers
asked by
maath
1,850 views
If a ball is thrown vertically upward from the roof of 48 foot building with a velocity of 96 ft/sec, its height after t seconds
4 answers
asked by
Jaken
1,623 views
A cyclist is coasting up a hill. At t=0, the cyclist has a velocity of 14.27 m/s. If the acceleration of
the cyclist is constant
3 answers
asked by
Alice
1,301 views
The average weight of a empty soda can isv18.2 grams. 12 ounces of soda weighs 373.96 grams. How much does a soda can full of
5 answers
asked by
Sun
1,709 views
A blacksmith strikes a piece of metal with a hammer repeatedly. The metal slowly begins to glow as the temperature increases,
10 answers
asked by
Nic
5,166 views
Which would best model the motion of P waves?(1 point) plss help
A.attaching one end of rope to a chair and moving the other end
7 answers
asked by
y
401 views
Which example demonstrates kinetic energy?
A: a wave crashing on the shore B: stretched out rubber band C: car parked in the
9 answers
asked by
Bonnilu
1,940 views
A rocket tracking station has two telescopes A and B placed 1.9 miles apart. The telescopes lock onto a rocket and transmit
4 answers
asked by
Anonymous
3,763 views
a student drop a rubber ball from a height of 8 feet . Each time the ball hits the ground, it bounces to 75% of its previous
4 answers
asked by
long nguyen
2,232 views
A golfer on a level fairway hits a ball at an angle of 42* to the horizontal that travels 100 yd before striking the ground. He
5 answers
asked by
Jennifer PR
3,839 views
A person gets a running start toward a wall from 5 meters away. The person pushes the wall with a force of 500 newtons, but the
3 answers
asked by
who dat
321 views
How much net force is needed to make a 60 kg object accelerate at a rate of 2.0 m/s^2?
A. 62N B. 62 kg C. 120 N D. 120 kg Is the
7 answers
asked by
Callie
2,422 views
Pulleys and Inclined Planes Quick Check
1 of 41 of 4 Items Question Use the picture to answer the question. An illustration shows
4 answers
asked by
who dat
759 views
Help Please??
If an ant walks for 10 minutes, how far will it travel? _______ meters *My answer is 180* If an ant traveled 22.5
7 answers
asked by
lib
2,049 views
In order to weigh a boy in the lab. A uniform plank of wood AB 3m long having a mass of 8kg is pivoted about a point 0.5m from B
9 answers
asked by
Zainab
1,047 views
Newton's First Law of Motion states that an object in motion tends to stay in motion unless it
A starts to decelerate. B runs out
1 answer
asked by
johannaEvans
110 views
What is the potential difference if a resistance of 25 ohms produce a current of 250 amperes?
6 answers
asked by
Javier
3,343 views
a rock is thrown straight up in the air from an initial height of ho, in metres, with the initial velocity vo, in metres per
4 answers
asked by
Kp
1,245 views
An occupant of a car has a chance of surviving a crash if the deceleration during the crash is not more than 30 g. Calculate the
6 answers
asked by
Janise
4,017 views
The half- life of a positron is very short. it reacts with an electron, and the masses of both are converted to two gamma-ray
7 answers
asked by
Anonymous
6,765 views
Jeriah places two metal cubes in contact with each other. Energy and heat flow from Cube A to Cube B. What conclusion can be
3 answers
asked by
6th g=rade
276 views
What is the best description of thermal energy
thermal energy is the energy stored in the chemical bonds of an object or
4 answers
asked by
I hate science
401 views
A crane lifts a 100-kg concrete block to a vertical height of 25 m. Determine the work done by the crane.
5 answers
asked by
rayyan
2,434 views
a runner jogs 12 km north then turns and runs 16 km east in three hours.what is his displacement
17 answers
asked by
bisrst
6,115 views
(1) A solid weight 0.04 Newton in air and 0.024 newton when fully immersed in liquid of density 300 kilogram per metre cube.What
4 answers
asked by
Daniel
1,170 views
a body of mass 5kg is thrown to a height of 100m.what is its potential energy at the maximum height.?
4 answers
asked by
steve
1,737 views
You pull a door open. If the force the door exerts on you is equal to the force you exert on the door, why don't you move?
7 answers
asked by
Jennifer
4,528 views
An object's weight is dependent upon its location in the universe. Why is this true?
A. This is true because weight is the
4 answers
asked by
Julie
1,211 views
Have you ever been on an airplane and heard the pilot say that the plane would be a little late because it would be flying into
4 answers
asked by
Megan
2,371 views
A relative density bottle has a mass of 40g when empty, 90g when filled with water and 80g when filled with oil. Calculate the
10 answers
asked by
isaac
2,232 views
In the production process of a glass sphere, hot glass is blown such that the radius,
r cm, increases over time (t seconds) in
4 answers
asked by
david
346 views
The bottom wave has a greater ____
4 answers
asked anonymously
588 views
1. Which of the following statements about mechanical waves is true?
Mechanical waves require a medium to travel through.
4 answers
asked by
Tristan Seymour
2,442 views
A 0.005kg bullet travelling horizontally with a speed of 1000m/s enters an 18kg door, embedding itself 10cm from the side
5 answers
asked by
Anonymous
7,071 views
A ball is thrown from the edge of a cliff with an initial velocity of 60·m/s upward. Answer the following questions using +
3 answers
asked by
jen
3,182 views
Car A, with mass of 1735kg, was traveling north at 45.5km/h and car B, with a mass of 2540kg, was traveling west at 37.7km/h
4 answers
asked by
Shaila
1,377 views
Suppose you were stranded on a desert island with only a convex lens and a mirror. Describe how you could use each of these
3 answers
asked by
Desert island 🏝
594 views
A buoy oscillates in simple harmonic motion as waves go by. The buoy moves a total of 3.5 feet from its low point to its high
5 answers
asked by
Emily
6,987 views
A stone is dropped from the edge of a roof, and hits the ground with a velocity of −170 feet per second. Assume the
4 answers
asked by
Anonymous
5,812 views
Describe the action and reaction force pairs involved when an object falls toward Earth. Ignore the effects of the air
4 answers
asked by
Anonymous
3,405 views
Which situation describes a correlation that is not a casual relationship?
1 The rroster crows, and the sun rises. 2 The more
4 answers
asked by
Anonymous
1,602 views
Which of the following statements correctly explains the relationship between FM and AM radio waves?
A. FM radio waves carry less
1 answer
asked by
Kira
214 views
What is the effect of using an inclined plane?
A.) The object can be lifted with less force. B.) The object can be lifted while
4 answers
asked by
goodog
420 views
Two identical point charges
(q �= �7.20 x 10^�6 C) are fixed at diagonally opposite corners of a square with sides of length
7 answers
asked by
Frustrated
3,542 views
A car has a crumple zone that is 0.80 m (80 cm) long. In this car, the distance from the dummy to the steering wheel is 0.50 m.
7 answers
asked by
mzvd /ak
7,772 views
a gardener holds a hose 0.75 m above the ground such that the water shoots out horizontally and hits the ground at a point 6.0
1 answer
asked by
hyuh
308 views
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