At the surface of a certain planet, the gravitational acceleration g has a magnitude of 15.0 m/s^2. A 23.0-kg brass ball is transported to this planet. a.)What is the mass of the brass ball on the Earth and on the planet? Express your answers using three significant figures separated by a comma. ______ kg b.)What is the weight of the brass ball on the Earth and on the planet?Express your answers using three significant figures separated by a comma. _______ N

I am looking for help with number 2.

Pls help ASAP. Pls give directions and magnitude in each question.

a.) Calculate the gravitational force exerted on earth by the moon. b.) Calculate the gravitational force exerted on earth by the sun. c.) What is the Net gravitational force exerted on the earth.

I'm not sure how to start solving this problem.

A bag of onions weighs 3.00 lb on Earth. What would it weigh on the Moon, where the free-fall acceleration is one-sixth that on Earth? Give your answer in units of newtons. 0.456 How does weight depend on the gravitational acceleration? What is the conversion factor from pounds to newtons? N What would it weigh on the surface of Pluto, where g is 0.0673 times that on Earth? Give your answer in units of newtons. What is the mass of the bag of onions in kilograms at each of the three locations? Earth 0.456 How are weight and mass related? What is the gravitational acceleration on the Earth's surface? Be sure to convert the weight from pounds to newtons before calculating the mass in kilograms. kg Мoon 0.456 Does mass depend on gravity? Should the mass be different from what it is on Earth? kg Pluto 0.456 Does mass depend on gravity? Should the mass be different from what it is on Earth? kg

Number 72

A dancer is standing on one leg on a drawbridge that is about to open. The coefficients of static and kinetic friction between the drawbridge and the dancer's foot are μs and μk, respectively. n⃗ represents the normal force exerted on the dancer by the bridge, and F⃗g represents the gravitational force exerted on the dancer, as shown in the drawing.(Figure 1). For all the questions, we can assume that the bridge is a perfectly flat surface and lacks the curvature characteristic of most bridges. Before the drawbridge starts to open, it is perfectly level with the ground. The dancer is standing still on one leg. What is the horizontal component of the friction force f⃗? (Express your answer in terms of some or all of the variables n, μs, and/or μk.) (Figure 2). The drawbridge then starts to rise. The dancer continues to stand on one leg. The drawbridge stops just at the point where the dancer is on the verge of slipping. What is the magnitude f of the frictional force now? (Express…

Gravitational field vector

Please answer with work part A and C