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Physics
Page 25
Questions (147,491)
The sonar of a stationary ship sends a signal with a frequency of 5.0x103-Hz through water. If the signals speed is 1.5x103-m/s
4 answers
asked by
Tiara
2,289 views
Two liters of water has a volume of ______ cubic centimeters and a mass of _______ kilograms.
4 answers
asked by
Elisabeth
1,539 views
What is the tension in the rope of this figure description?
60 kg person is hanging in the air on a rope attached to a pulley,
6 answers
asked by
Sarah
20,226 views
1. Which of these quantities is a vector?
A. Time B. Momentum C. Distance D. Speed 2. What is the representation of the momentum
11 answers
asked by
Ashly
9,788 views
Bob is pulling a 30kg filing cabinet with a force of 200N , but the filing cabinet refuses to move. The coefficient of static
11 answers
asked by
T
21,625 views
When a 58g tennis ball is served, it accelerates from rest to a speed of 45m/s. The impact with the racket gives the ball a
7 answers
asked by
Natasha
12,426 views
A 2.0 kg mass starts from rest and slides down an inclined plane 8.0 X 10^-1 m long in .50s. what net force is acting on the
5 answers
asked by
physics
13,570 views
If a man weighs 900 N on the earth, what would he weigh on jupiter, where acceleration due to gravity is 25.9 m/s^2?
10 answers
asked by
Godwin
23,956 views
A spring is hung from a ceiling, and an object attached to its lower end stretches the spring by a distance d = 7.70 cm from its
4 answers
asked by
Ame
7,501 views
A boy can throw a ball a maximum horizontal distance of R on a level field. How far can he throw the same ball vertically
5 answers
asked by
Abraham
6,358 views
2. At time t =0, the current to the dc motor is reversed, resulting in an angular displacement of the motor shaft given by θ =
6 answers
asked by
bruce
10,041 views
A ball mass 1000g is drop from a height Of 5m and rebounded to a height Of 25 m. Find i it kintentic just before impact ii its
9 answers
asked by
Anonymous
3,295 views
In thrill machine rides at amusement parks ,there can be an acceleration of 3g or more .But without head rests ,acceleration
7 answers
asked by
aman
4,900 views
Archimedes purportedly used his principle to verify that the king's crown was pure gold, by weighing the crown while it was
4 answers
asked by
Victor
5,700 views
on a air track, a 400g glider moving to the right at 2.00m/s collides elastically with a 500g glider moving in the opposite
5 answers
asked by
Alana
3,884 views
A body of mass is 5kg moving with a velocity of 20m due south hits a stationary body of mass is 3kg if they move together after
5 answers
asked by
Amara
3,639 views
an elevator lifts a total mass of 1.1x10^3 kg, a distance of 40 m in 12.5 s. How much power does the elevator demonstrate?
P=w/t
7 answers
asked by
Anonymous
6,373 views
A 75 g bungee cord has an equilibrium length of 1.20 m. The cord is stretched to a length of
1.80 m, then vibrated at 20 Hz. This
4 answers
asked by
Lucas
7,877 views
The range of human hearing extends from approximately 20 Hz to 20000 Hz. Find the wavelength of these extremes when the speed of
5 answers
asked by
Lena
9,445 views
a model of a helicopter rotor has four blades, each 3.40 m in length from the central shaft to the tip of the blade. The model
4 answers
asked by
Sarah
13,405 views
An escalator carries 60 people of average mass 70 kg to a height of 5m in one minute.Find the power needed to do this.
6 answers
asked by
Sarah
4,141 views
A cake of soap placed in a bathtub of water sinks. The buoyant force on the soap is:
a- Zero b- Less than its weight c- Equal to
5 answers
asked by
DMITRIC
5,834 views
at t=0, a particle moving in the xy plane with constant acceleration has a velocity of vi=(3.00i-2.00j) m/s and is at the
7 answers
asked by
arnold
3,954 views
A student connects a battery to a light bulb using wires, creating a closed simple circuit. The student connects an ammeter to
6 answers
asked by
lyssa
2,929 views
A 1200 kg car pushes a 2100 kg truck that has a dead battery to the right. When the driver steps on the accelerator, the drive
4 answers
asked by
Help Physics college
14,382 views
a car is moving at a constant speed of 20m/s^-1. The force retarding its motion is 500N. Calculate the engine power of the car
6 answers
asked by
Olivia
1,658 views
A car, in overtaking trailer, uniformly accelerated its speed from 40 kph to 90 kph in 8 seconds. Calculate the distance
4 answers
asked by
Unknown
4,309 views
10. A cannon elevated at an angle of 35º to the
horizontal fires a cannonball, which travels the path shown in the diagram
9 answers
asked by
Physics Student need help
10,393 views
A car is driven at a constant speed of 21 m/s (76km/h) down a road. The car's engine delivers 52 kW of power. Calculate the
5 answers
asked by
Einstein
5,707 views
A hydraulic lift has 1000 N applied to an input piston that has an area of 30 cm2.
What is the pressure exerted on the input
5 answers
asked by
Xavier
3,108 views
From what height would a compact car have to be dropped to have the same kinetic energy that it has when being driven at 100
5 answers
asked by
jason----HELP!!!!
9,843 views
The intensity of a certain sound wave is 6 ì W.cm2. if its intensity is raised by 20 decibels, the new intensity (in ìW/cm2)
5 answers
asked by
khaled fayek
4,590 views
An object is attached to the lower end of a 100-coil spring that is hanging from the ceiling. The spring stretches by 0.210 m.
5 answers
asked by
jim
3,503 views
An object act upon by two forces 5N and 12N. calculate the resultant Of the two forces if the two forces act perpendicular to
7 answers
asked by
Tawheed Mahmud
3,632 views
1. The electrostatic force of attraction between two small spheres that are 1.0 meter apart is F. If the distance between the
5 answers
asked by
Priscilla
6,640 views
A refrigerator has a coefficient of performance of 4.0. When removing 2.4x10^4 J from inside the refrigerator, how much energy
4 answers
asked by
Q
5,416 views
When light of a certain wavelength is incident normally on a certain diffraction grating the line of order 1 is at a diffraction
4 answers
asked by
Susan
3,802 views
A circuit is constructed with a 20-V power supply and two resistors in series: R1 = 4.0 ohms, and R2 = 2.0 ohms. What is the
5 answers
asked by
jasmine
2,396 views
A heat engine operating between 100 degree celcius and 700 degree celcius has an efficiency equal to 40% of the maximum
11 answers
asked by
MZAOEM
2,729 views
Two equal charges of magnitude q are at a distance of r units apart. In which scenario will the electrostatic force between them
4 answers
asked by
jasmine
1,911 views
The four tires of an automobile are inflated to an absolute pressure of 2.0*10^5 Pa. Each tire has an area of 0.024m^2 in
6 answers
asked by
Sarah
15,461 views
A 1000 kg car is rolling down the street at 2.5 m/s. How fast would a 2500 kg car have to collide into it in order to bring it
5 answers
asked by
eileen
4,618 views
an astronaut on the planet zircon tosses a rock horizonally with a speed of 6.95 m/s. the rock falls through a vertical distance
5 answers
asked by
taylor
8,419 views
A man whose mass is 70 kg walks up to the third floor of a building. This is a vertical height of 12 m above the street level.
(a
4 answers
asked by
pakilina
4,022 views
A stereo speaker represented by P in Figure 13-22 emits sound waves with a power output of 130.0 W. What is the intensity of the
4 answers
asked by
unknown
3,203 views
a relative density bottle weight 20g when empty 80g when fill with water and 100g when with a liquid. find the relative density
7 answers
asked by
Anonymous
1,700 views
Amechanic pushes a 2.50*10^3 kg car from rest to a speed of v, doing 5.00*10^3 Jof work in the process, During this time, the
4 answers
asked by
Anynomous
4,608 views
An object weighs 15N in air and 13N when submerged in water. What is the density of the object.
5 answers
asked by
Striker
6,429 views
The kinetic energy of a rolling billiard ball is given by KE=1/2mv2. Suppose a 0.17-kg billiard ball is rolling down a pool
5 answers
asked by
meghan
4,874 views
A 75-W, 120-V bulb is connected in parallel with 25-W, 120-V bulb. What is the net resistance?
4 answers
asked by
Allen
3,684 views
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